ID CVE-2014-8171
Summary The memory resource controller (aka memcg) in the Linux kernel allows local users to cause a denial of service (deadlock) by spawning new processes within a memory-constrained cgroup.
References
Vulnerable Configurations
  • Linux Kernel
    cpe:2.3:o:linux:linux_kernel
  • RedHat Enterprise MRG 2.0
    cpe:2.3:a:redhat:enterprise_mrg:2.0
  • Red Hat Enterprise Linux 6.0
    cpe:2.3:o:redhat:enterprise_linux:6.0
  • Red Hat Enterprise Linux (RHEL) 7.0 (7)
    cpe:2.3:o:redhat:enterprise_linux:7.0
CVSS
Base: 4.9
Impact:
Exploitability:
CWE CWE-399
CAPEC
nessus via4
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-0864.NASL
    description From Red Hat Security Advisory 2015:0864 : Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way seunshare, a utility for running executables under a different security context, used the capng_lock functionality of the libcap-ng library. The subsequent invocation of suid root binaries that relied on the fact that the setuid() system call, among others, also sets the saved set-user-ID when dropping the binaries' process privileges, could allow a local, unprivileged user to potentially escalate their privileges on the system. Note: the fix for this issue is the kernel part of the overall fix, and introduces the PR_SET_NO_NEW_PRIVS functionality and the related SELinux exec transitions support. (CVE-2014-3215, Important) * A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important) * It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2014-3690, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. (CVE-2014-7825, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges. (CVE-2014-7826, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory-constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found in the way the Linux kernel keys management subsystem performed key garbage collection. A local attacker could attempt accessing a key while it was being garbage collected, which would cause the system to crash. (CVE-2014-9529, Moderate) * A stack-based buffer overflow flaw was found in the TechnoTrend/Hauppauge DEC USB device driver. A local user with write access to the corresponding device could use this flaw to crash the kernel or, potentially, elevate their privileges on the system. (CVE-2014-8884, Low) * An information leak flaw was found in the way the Linux kernel's ISO9660 file system implementation accessed data on an ISO9660 image with RockRidge Extension Reference (ER) records. An attacker with physical access to the system could use this flaw to disclose up to 255 bytes of kernel memory. (CVE-2014-9584, Low) Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-3215 and CVE-2014-3690, Robert Swiecki for reporting CVE-2014-7825 and CVE-2014-7826, and Carl Henrik Lunde for reporting CVE-2014-9584. The CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat. This update also fixes several bugs. Documentation for these changes is available from the Technical Notes document linked to in the References section. All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 82981
    published 2015-04-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82981
    title Oracle Linux 6 : kernel (ELSA-2015-0864)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-0864.NASL
    description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way seunshare, a utility for running executables under a different security context, used the capng_lock functionality of the libcap-ng library. The subsequent invocation of suid root binaries that relied on the fact that the setuid() system call, among others, also sets the saved set-user-ID when dropping the binaries' process privileges, could allow a local, unprivileged user to potentially escalate their privileges on the system. Note: the fix for this issue is the kernel part of the overall fix, and introduces the PR_SET_NO_NEW_PRIVS functionality and the related SELinux exec transitions support. (CVE-2014-3215, Important) * A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important) * It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2014-3690, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. (CVE-2014-7825, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges. (CVE-2014-7826, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory-constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found in the way the Linux kernel keys management subsystem performed key garbage collection. A local attacker could attempt accessing a key while it was being garbage collected, which would cause the system to crash. (CVE-2014-9529, Moderate) * A stack-based buffer overflow flaw was found in the TechnoTrend/Hauppauge DEC USB device driver. A local user with write access to the corresponding device could use this flaw to crash the kernel or, potentially, elevate their privileges on the system. (CVE-2014-8884, Low) * An information leak flaw was found in the way the Linux kernel's ISO9660 file system implementation accessed data on an ISO9660 image with RockRidge Extension Reference (ER) records. An attacker with physical access to the system could use this flaw to disclose up to 255 bytes of kernel memory. (CVE-2014-9584, Low) Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-3215 and CVE-2014-3690, Robert Swiecki for reporting CVE-2014-7825 and CVE-2014-7826, and Carl Henrik Lunde for reporting CVE-2014-9584. The CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat. This update also fixes several bugs. Documentation for these changes is available from the Technical Notes document linked to in the References section. All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-26
    plugin id 82985
    published 2015-04-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82985
    title RHEL 6 : kernel (RHSA-2015:0864)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2015-0109.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates in kernel-uek.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 85188
    published 2015-08-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=85188
    title OracleVM 3.3 : kernel-uek (OVMSA-2015-0109)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2015-0060.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - crypto: aesni - fix memory usage in GCM decryption (Stephan Mueller) [Orabug: 21077385] (CVE-2015-3331) - xen/pciback: Don't disable PCI_COMMAND on PCI device reset. (Konrad Rzeszutek Wilk) [Orabug: 20807438] (CVE-2015-2150) - xen-blkfront: fix accounting of reqs when migrating (Roger Pau Monne) [Orabug: 20860817] - Doc/cpu-hotplug: Specify race-free way to register CPU hotplug callbacks (Srivatsa S. Bhat) [Orabug: 20917697] - net/iucv/iucv.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - net/core/flow.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - mm, vmstat: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - profile: Fix CPU hotplug callback registration (Srivatsa S. Bhat) - trace, ring-buffer: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - hwmon, via-cputemp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) - hwmon, coretemp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - octeon, watchdog: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - oprofile, nmi-timer: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - intel-idle: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - drivers/base/topology.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - acpi-cpufreq: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - scsi, fcoe: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - scsi, bnx2fc: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - scsi, bnx2i: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - arm64, debug-monitors: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - arm64, hw_breakpoint.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, kvm: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, oprofile, nmi: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, pci, amd-bus: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, hpet: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, intel, cacheinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, amd, ibs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, therm_throt.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, mce: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, intel, uncore: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, vsyscall: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, cpuid: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - x86, msr: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - powerpc, sysfs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) - sparc, sysfs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - s390, smp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - s390, cacheinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) - arm, hw-breakpoint: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - ia64, err-inject: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - ia64, topology: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - ia64, palinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - CPU hotplug, perf: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] - CPU hotplug: Provide lockless versions of callback registration functions (Srivatsa S. Bhat) [Orabug: 20917697] - isofs: Fix unchecked printing of ER records (Jan Kara) [Orabug: 20930551] (CVE-2014-9584) - KEYS: close race between key lookup and freeing (Sasha Levin) [Orabug: 20930548] (CVE-2014-9529) (CVE-2014-9529) - mm: memcg: do not allow task about to OOM kill to bypass the limit (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: do not declare OOM from __GFP_NOFAIL allocations (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - fs: buffer: move allocation failure loop into the allocator (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: handle non-error OOM situations more gracefully (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: do not trap chargers with full callstack on OOM (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: rework and document OOM waiting and wakeup (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: enable memcg OOM killer only for user faults (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - x86: finish user fault error path with fatal signal (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - arch: mm: pass userspace fault flag to generic fault handler (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - selinux: Permit bounded transitions under NO_NEW_PRIVS or NOSUID. (Stephen Smalley) [Orabug: 20930501] (CVE-2014-3215) - IB/core: Prevent integer overflow in ib_umem_get address arithmetic (Shachar Raindel) [Orabug: 20799875] (CVE-2014-8159) (CVE-2014-8159)
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 83485
    published 2015-05-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83485
    title OracleVM 3.3 : kernel-uek (OVMSA-2015-0060)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-3064.NASL
    description The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s).
    last seen 2019-02-21
    modified 2018-03-05
    plugin id 85177
    published 2015-08-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=85177
    title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2015-3064)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-2152.NASL
    description Updated kernel packages that fix multiple security issues, address several hundred bugs, and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 7. This is the second regular update. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. (CVE-2015-2925, Important) * A race condition flaw was found in the way the Linux kernel's IPC subsystem initialized certain fields in an IPC object structure that were later used for permission checking before inserting the object into a globally visible list. A local, unprivileged user could potentially use this flaw to elevate their privileges on the system. (CVE-2015-7613, Important) * It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. (CVE-2010-5313, CVE-2014-7842, Moderate) * A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP (for example, branches or calls). A guest user with access to an I/O or MMIO region could use this flaw to crash the guest. (CVE-2014-3647, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found between the chown and execve system calls. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-3339, Moderate) * A flaw was discovered in the way the Linux kernel's TTY subsystem handled the tty shutdown phase. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-4170, Moderate) * A NULL pointer dereference flaw was found in the SCTP implementation. A local user could use this flaw to cause a denial of service on the system by triggering a kernel panic when creating multiple sockets in parallel while the system did not have the SCTP module loaded. (CVE-2015-5283, Moderate) * A flaw was found in the way the Linux kernel's perf subsystem retrieved userlevel stack traces on PowerPC systems. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-6526, Moderate) * A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel. (CVE-2013-7421, CVE-2014-9644, Low) * An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process. (CVE-2014-9419, Low) * It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the SYSENTER model-specific registers (MSRs). Note: Certified guest operating systems for Red Hat Enterprise Linux with KVM do initialize the SYSENTER MSRs and are thus not vulnerable to this issue when running on a KVM hypervisor. (CVE-2015-0239, Low) * A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. (CVE-2015-7837, Low)
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 86972
    published 2015-11-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=86972
    title RHEL 7 : kernel (RHSA-2015:2152)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-2411.NASL
    description Updated kernel-rt packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. (CVE-2015-2925, Important) * A race condition flaw was found in the way the Linux kernel's IPC subsystem initialized certain fields in an IPC object structure that were later used for permission checking before inserting the object into a globally visible list. A local, unprivileged user could potentially use this flaw to elevate their privileges on the system. (CVE-2015-7613, Important) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory-constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found between the chown and execve system calls. When changing the owner of a setuid user binary to root, the race condition could momentarily make the binary setuid root. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-3339, Moderate) * A flaw was discovered in the way the Linux kernel's TTY subsystem handled the tty shutdown phase. A local, unprivileged user could use this flaw to cause a denial of service on the system by holding a reference to the ldisc lock during tty shutdown, causing a deadlock. (CVE-2015-4170, Moderate) * A NULL pointer dereference flaw was found in the SCTP implementation. A local user could use this flaw to cause a denial of service on the system by triggering a kernel panic when creating multiple sockets in parallel while the system did not have the SCTP module loaded. (CVE-2015-5283, Moderate) * A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel. (CVE-2013-7421, CVE-2014-9644, Low) * An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process. (CVE-2014-9419, Low) * A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. (CVE-2015-7837, Low) Red Hat would like to thank Linn Crosetto of HP for reporting the CVE-2015-7837 issue. The CVE-2015-5283 issue was discovered by Ji Jianwen from Red Hat engineering. The kernel-rt packages have been upgraded to version 3.10.0-326.rt56.204, which provides a number of bug fixes and enhancements. (BZ#1201915, BZ#1211724) This update also fixes several bugs and adds multiple enhancements. Refer to the following Red Hat Knowledgebase article for information on the most significant of these changes : https://access.redhat.com/articles/2055783 All kernel-rt users are advised to upgrade to these updated packages, which correct these issues and add these enhancements. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 88571
    published 2016-02-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88571
    title RHEL 7 : kernel-rt (RHSA-2015:2411)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-2152.NASL
    description From Red Hat Security Advisory 2015:2152 : Updated kernel packages that fix multiple security issues, address several hundred bugs, and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 7. This is the second regular update. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. (CVE-2015-2925, Important) * A race condition flaw was found in the way the Linux kernel's IPC subsystem initialized certain fields in an IPC object structure that were later used for permission checking before inserting the object into a globally visible list. A local, unprivileged user could potentially use this flaw to elevate their privileges on the system. (CVE-2015-7613, Important) * It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. (CVE-2010-5313, CVE-2014-7842, Moderate) * A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP (for example, branches or calls). A guest user with access to an I/O or MMIO region could use this flaw to crash the guest. (CVE-2014-3647, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found between the chown and execve system calls. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-3339, Moderate) * A flaw was discovered in the way the Linux kernel's TTY subsystem handled the tty shutdown phase. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-4170, Moderate) * A NULL pointer dereference flaw was found in the SCTP implementation. A local user could use this flaw to cause a denial of service on the system by triggering a kernel panic when creating multiple sockets in parallel while the system did not have the SCTP module loaded. (CVE-2015-5283, Moderate) * A flaw was found in the way the Linux kernel's perf subsystem retrieved userlevel stack traces on PowerPC systems. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-6526, Moderate) * A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel. (CVE-2013-7421, CVE-2014-9644, Low) * An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process. (CVE-2014-9419, Low) * It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the SYSENTER model-specific registers (MSRs). Note: Certified guest operating systems for Red Hat Enterprise Linux with KVM do initialize the SYSENTER MSRs and are thus not vulnerable to this issue when running on a KVM hypervisor. (CVE-2015-0239, Low) * A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. (CVE-2015-7837, Low)
    last seen 2019-02-21
    modified 2018-09-05
    plugin id 87090
    published 2015-11-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87090
    title Oracle Linux 7 : kernel (ELSA-2015-2152)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-3032.NASL
    description Description of changes: kernel-uek [3.8.13-68.1.3.el7uek] - isofs: Fix unchecked printing of ER records (Jan Kara) [Orabug: 20930551] {CVE-2014-9584} - KEYS: close race between key lookup and freeing (Sasha Levin) [Orabug: 20930548] {CVE-2014-9529} {CVE-2014-9529} - mm: memcg: do not allow task about to OOM kill to bypass the limit (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - mm: memcg: do not declare OOM from __GFP_NOFAIL allocations (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - fs: buffer: move allocation failure loop into the allocator (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - mm: memcg: handle non-error OOM situations more gracefully (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - mm: memcg: do not trap chargers with full callstack on OOM (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - mm: memcg: rework and document OOM waiting and wakeup (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - mm: memcg: enable memcg OOM killer only for user faults (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - x86: finish user fault error path with fatal signal (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - arch: mm: pass userspace fault flag to generic fault handler (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} - selinux: Permit bounded transitions under NO_NEW_PRIVS or NOSUID. (Stephen Smalley) [Orabug: 20930501] {CVE-2014-3215}
    last seen 2019-02-21
    modified 2018-03-05
    plugin id 83045
    published 2015-04-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83045
    title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2015-3032)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0068.NASL
    description Updated kernel-rt packages that fix one security issue are now available for Red Hat Enterprise MRG 2. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A use-after-free flaw was found in the way the Linux kernel's key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system. (CVE-2016-0728, Important) Red Hat would like to thank the Perception Point research team for reporting this issue. All kernel-rt users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 88405
    published 2016-01-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88405
    title RHEL 6 : MRG (RHSA-2016:0068)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2015-0056.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - isofs: Fix unchecked printing of ER records (Jan Kara) [Orabug: 20930551] (CVE-2014-9584) - KEYS: close race between key lookup and freeing (Sasha Levin) [Orabug: 20930548] (CVE-2014-9529) (CVE-2014-9529) - mm: memcg: do not allow task about to OOM kill to bypass the limit (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: do not declare OOM from __GFP_NOFAIL allocations (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - fs: buffer: move allocation failure loop into the allocator (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: handle non-error OOM situations more gracefully (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: do not trap chargers with full callstack on OOM (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: rework and document OOM waiting and wakeup (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - mm: memcg: enable memcg OOM killer only for user faults (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - x86: finish user fault error path with fatal signal (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - arch: mm: pass userspace fault flag to generic fault handler (Johannes Weiner) [Orabug: 20930539] (CVE-2014-8171) - selinux: Permit bounded transitions under NO_NEW_PRIVS or NOSUID. (Stephen Smalley) [Orabug: 20930501] (CVE-2014-3215)
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 83108
    published 2015-04-28
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83108
    title OracleVM 3.3 : kernel-uek (OVMSA-2015-0056)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-3035.NASL
    description Description of changes: kernel-uek [3.8.13-68.2.2.el7uek] * crypto: aesni * fix memory usage in GCM decryption (Stephan Mueller) [Orabug: 21077385] {CVE-2015-3331} [3.8.13-68.2.1.el7uek] * xen/pciback: Don't disable PCI_COMMAND on PCI device reset. (Konrad Rzeszutek Wilk) [Orabug: 20807438] {CVE-2015-2150} * xen-blkfront: fix accounting of reqs when migrating (Roger Pau Monne) [Orabug: 20860817] * Doc/cpu-hotplug: Specify race-free way to register CPU hotplug callbacks (Srivatsa S. Bhat) [Orabug: 20917697] * net/iucv/iucv.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * net/core/flow.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * mm, vmstat: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * profile: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * trace, ring-buffer: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * hwmon, via-cputemp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * hwmon, coretemp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * octeon, watchdog: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * oprofile, nmi-timer: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * intel-idle: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * drivers/base/topology.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * acpi-cpufreq: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * scsi, fcoe: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * scsi, bnx2fc: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * scsi, bnx2i: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * arm64, debug-monitors: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * arm64, hw_breakpoint.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, kvm: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, oprofile, nmi: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, pci, amd-bus: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, hpet: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, intel, cacheinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, amd, ibs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, therm_throt.c: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, mce: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, intel, uncore: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, vsyscall: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, cpuid: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * x86, msr: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * powerpc, sysfs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * sparc, sysfs: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * s390, smp: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * s390, cacheinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * arm, hw-breakpoint: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * ia64, err-inject: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * ia64, topology: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * ia64, palinfo: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * CPU hotplug, perf: Fix CPU hotplug callback registration (Srivatsa S. Bhat) [Orabug: 20917697] * CPU hotplug: Provide lockless versions of callback registration functions (Srivatsa S. Bhat) [Orabug: 20917697] * isofs: Fix unchecked printing of ER records (Jan Kara) [Orabug: 20930551] {CVE-2014-9584} * KEYS: close race between key lookup and freeing (Sasha Levin) [Orabug: 20930548] {CVE-2014-9529} {CVE-2014-9529} * mm: memcg: do not allow task about to OOM kill to bypass the limit (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * mm: memcg: do not declare OOM from __GFP_NOFAIL allocations (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * fs: buffer: move allocation failure loop into the allocator (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * mm: memcg: handle non-error OOM situations more gracefully (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * mm: memcg: do not trap chargers with full callstack on OOM (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * mm: memcg: rework and document OOM waiting and wakeup (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * mm: memcg: enable memcg OOM killer only for user faults (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * x86: finish user fault error path with fatal signal (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * arch: mm: pass userspace fault flag to generic fault handler (Johannes Weiner) [Orabug: 20930539] {CVE-2014-8171} * selinux: Permit bounded transitions under NO_NEW_PRIVS or NOSUID. (Stephen Smalley) [Orabug: 20930501] {CVE-2014-3215} * IB/core: Prevent integer overflow in ib_umem_get address arithmetic (Shachar Raindel) [Orabug: 20799875] {CVE-2014-8159} {CVE-2014-8159}
    last seen 2019-02-21
    modified 2018-03-05
    plugin id 83448
    published 2015-05-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83448
    title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2015-3035)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2015-0864.NASL
    description Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way seunshare, a utility for running executables under a different security context, used the capng_lock functionality of the libcap-ng library. The subsequent invocation of suid root binaries that relied on the fact that the setuid() system call, among others, also sets the saved set-user-ID when dropping the binaries' process privileges, could allow a local, unprivileged user to potentially escalate their privileges on the system. Note: the fix for this issue is the kernel part of the overall fix, and introduces the PR_SET_NO_NEW_PRIVS functionality and the related SELinux exec transitions support. (CVE-2014-3215, Important) * A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important) * It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2014-3690, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. (CVE-2014-7825, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges. (CVE-2014-7826, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory-constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found in the way the Linux kernel keys management subsystem performed key garbage collection. A local attacker could attempt accessing a key while it was being garbage collected, which would cause the system to crash. (CVE-2014-9529, Moderate) * A stack-based buffer overflow flaw was found in the TechnoTrend/Hauppauge DEC USB device driver. A local user with write access to the corresponding device could use this flaw to crash the kernel or, potentially, elevate their privileges on the system. (CVE-2014-8884, Low) * An information leak flaw was found in the way the Linux kernel's ISO9660 file system implementation accessed data on an ISO9660 image with RockRidge Extension Reference (ER) records. An attacker with physical access to the system could use this flaw to disclose up to 255 bytes of kernel memory. (CVE-2014-9584, Low) Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-3215 and CVE-2014-3690, Robert Swiecki for reporting CVE-2014-7825 and CVE-2014-7826, and Carl Henrik Lunde for reporting CVE-2014-9584. The CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat. This update also fixes several bugs. Documentation for these changes is available from the Technical Notes document linked to in the References section. All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 82999
    published 2015-04-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82999
    title CentOS 6 : kernel (CESA-2015:0864)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0057.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0057 for details.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 99163
    published 2017-04-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99163
    title OracleVM 3.3 : Unbreakable / etc (OVMSA-2017-0057) (Dirty COW)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2015-2152.NASL
    description Updated kernel packages that fix multiple security issues, address several hundred bugs, and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 7. This is the second regular update. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. (CVE-2015-2925, Important) * A race condition flaw was found in the way the Linux kernel's IPC subsystem initialized certain fields in an IPC object structure that were later used for permission checking before inserting the object into a globally visible list. A local, unprivileged user could potentially use this flaw to elevate their privileges on the system. (CVE-2015-7613, Important) * It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. (CVE-2010-5313, CVE-2014-7842, Moderate) * A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP (for example, branches or calls). A guest user with access to an I/O or MMIO region could use this flaw to crash the guest. (CVE-2014-3647, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found between the chown and execve system calls. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-3339, Moderate) * A flaw was discovered in the way the Linux kernel's TTY subsystem handled the tty shutdown phase. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-4170, Moderate) * A NULL pointer dereference flaw was found in the SCTP implementation. A local user could use this flaw to cause a denial of service on the system by triggering a kernel panic when creating multiple sockets in parallel while the system did not have the SCTP module loaded. (CVE-2015-5283, Moderate) * A flaw was found in the way the Linux kernel's perf subsystem retrieved userlevel stack traces on PowerPC systems. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-6526, Moderate) * A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel. (CVE-2013-7421, CVE-2014-9644, Low) * An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process. (CVE-2014-9419, Low) * It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the SYSENTER model-specific registers (MSRs). Note: Certified guest operating systems for Red Hat Enterprise Linux with KVM do initialize the SYSENTER MSRs and are thus not vulnerable to this issue when running on a KVM hypervisor. (CVE-2015-0239, Low) * A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. (CVE-2015-7837, Low)
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 87135
    published 2015-12-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87135
    title CentOS 7 : kernel (CESA-2015:2152)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20150421_KERNEL_ON_SL6_X.NASL
    description * A flaw was found in the way seunshare, a utility for running executables under a different security context, used the capng_lock functionality of the libcap-ng library. The subsequent invocation of suid root binaries that relied on the fact that the setuid() system call, among others, also sets the saved set-user-ID when dropping the binaries' process privileges, could allow a local, unprivileged user to potentially escalate their privileges on the system. Note: the fix for this issue is the kernel part of the overall fix, and introduces the PR_SET_NO_NEW_PRIVS functionality and the related SELinux exec transitions support. (CVE-2014-3215, Important) * A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important) * It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2014-3690, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. (CVE-2014-7825, Moderate) * An out-of-bounds memory access flaw was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges. (CVE-2014-7826, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker able to continuously spawn new processes within a single memory- constrained cgroup during an OOM event could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found in the way the Linux kernel keys management subsystem performed key garbage collection. A local attacker could attempt accessing a key while it was being garbage collected, which would cause the system to crash. (CVE-2014-9529, Moderate) * A stack-based buffer overflow flaw was found in the TechnoTrend/Hauppauge DEC USB device driver. A local user with write access to the corresponding device could use this flaw to crash the kernel or, potentially, elevate their privileges on the system. (CVE-2014-8884, Low) * An information leak flaw was found in the way the Linux kernel's ISO9660 file system implementation accessed data on an ISO9660 image with RockRidge Extension Reference (ER) records. An attacker with physical access to the system could use this flaw to disclose up to 255 bytes of kernel memory. (CVE-2014-9584, Low) The system must be rebooted for this update to take effect.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 82988
    published 2015-04-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82988
    title Scientific Linux Security Update : kernel on SL6.x i386/x86_64
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20151119_KERNEL_ON_SL7_X.NASL
    description * A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. (CVE-2015-2925, Important) * A race condition flaw was found in the way the Linux kernel's IPC subsystem initialized certain fields in an IPC object structure that were later used for permission checking before inserting the object into a globally visible list. A local, unprivileged user could potentially use this flaw to elevate their privileges on the system. (CVE-2015-7613, Important) * It was found that reporting emulation failures to user space could lead to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. (CVE-2010-5313, CVE-2014-7842, Moderate) * A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP (for example, branches or calls). A guest user with access to an I/O or MMIO region could use this flaw to crash the guest. (CVE-2014-3647, Moderate) * It was found that the Linux kernel memory resource controller's (memcg) handling of OOM (out of memory) conditions could lead to deadlocks. An attacker could use this flaw to lock up the system. (CVE-2014-8171, Moderate) * A race condition flaw was found between the chown and execve system calls. A local, unprivileged user could potentially use this flaw to escalate their privileges on the system. (CVE-2015-3339, Moderate) * A flaw was discovered in the way the Linux kernel's TTY subsystem handled the tty shutdown phase. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-4170, Moderate) * A NULL pointer dereference flaw was found in the SCTP implementation. A local user could use this flaw to cause a denial of service on the system by triggering a kernel panic when creating multiple sockets in parallel while the system did not have the SCTP module loaded. (CVE-2015-5283, Moderate) * A flaw was found in the way the Linux kernel's perf subsystem retrieved userlevel stack traces on PowerPC systems. A local, unprivileged user could use this flaw to cause a denial of service on the system. (CVE-2015-6526, Moderate) * A flaw was found in the way the Linux kernel's Crypto subsystem handled automatic loading of kernel modules. A local user could use this flaw to load any installed kernel module, and thus increase the attack surface of the running kernel. (CVE-2013-7421, CVE-2014-9644, Low) * An information leak flaw was found in the way the Linux kernel changed certain segment registers and thread-local storage (TLS) during a context switch. A local, unprivileged user could use this flaw to leak the user space TLS base address of an arbitrary process. (CVE-2014-9419, Low) * It was found that the Linux kernel KVM subsystem's sysenter instruction emulation was not sufficient. An unprivileged guest user could use this flaw to escalate their privileges by tricking the hypervisor to emulate a SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the SYSENTER model-specific registers (MSRs). Note: Certified guest operating systems for Scientific Linux with KVM do initialize the SYSENTER MSRs and are thus not vulnerable to this issue when running on a KVM hypervisor. (CVE-2015-0239, Low) * A flaw was found in the way the Linux kernel handled the securelevel functionality after performing a kexec operation. A local attacker could use this flaw to bypass the security mechanism of the securelevel/secureboot combination. (CVE-2015-7837, Low)
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 87559
    published 2015-12-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87559
    title Scientific Linux Security Update : kernel on SL7.x x86_64
redhat via4
advisories
  • rhsa
    id RHSA-2015:0864
  • rhsa
    id RHSA-2015:2152
  • rhsa
    id RHSA-2015:2411
  • rhsa
    id RHSA-2016:0068
rpms
  • kernel-0:2.6.32-504.16.2.el6
  • kernel-abi-whitelists-0:2.6.32-504.16.2.el6
  • kernel-bootwrapper-0:2.6.32-504.16.2.el6
  • kernel-debug-0:2.6.32-504.16.2.el6
  • kernel-debug-devel-0:2.6.32-504.16.2.el6
  • kernel-devel-0:2.6.32-504.16.2.el6
  • kernel-doc-0:2.6.32-504.16.2.el6
  • kernel-firmware-0:2.6.32-504.16.2.el6
  • kernel-headers-0:2.6.32-504.16.2.el6
  • kernel-kdump-0:2.6.32-504.16.2.el6
  • kernel-kdump-devel-0:2.6.32-504.16.2.el6
  • perf-0:2.6.32-504.16.2.el6
  • python-perf-0:2.6.32-504.16.2.el6
  • kernel-0:3.10.0-327.el7
  • kernel-abi-whitelists-0:3.10.0-327.el7
  • kernel-bootwrapper-0:3.10.0-327.el7
  • kernel-debug-0:3.10.0-327.el7
  • kernel-debug-devel-0:3.10.0-327.el7
  • kernel-devel-0:3.10.0-327.el7
  • kernel-doc-0:3.10.0-327.el7
  • kernel-headers-0:3.10.0-327.el7
  • kernel-kdump-0:3.10.0-327.el7
  • kernel-kdump-devel-0:3.10.0-327.el7
  • kernel-tools-0:3.10.0-327.el7
  • kernel-tools-libs-0:3.10.0-327.el7
  • kernel-tools-libs-devel-0:3.10.0-327.el7
  • perf-0:3.10.0-327.el7
  • python-perf-0:3.10.0-327.el7
  • kernel-rt-0:3.10.0-327.rt56.204.el7
  • kernel-rt-debug-0:3.10.0-327.rt56.204.el7
  • kernel-rt-debug-devel-0:3.10.0-327.rt56.204.el7
  • kernel-rt-devel-0:3.10.0-327.rt56.204.el7
  • kernel-rt-doc-0:3.10.0-327.rt56.204.el7
  • kernel-rt-trace-0:3.10.0-327.rt56.204.el7
  • kernel-rt-trace-devel-0:3.10.0-327.rt56.204.el7
refmap via4
bid 74293
confirm https://bugzilla.redhat.com/show_bug.cgi?id=1198109
Last major update 09-02-2018 - 17:29
Published 09-02-2018 - 17:29
Last modified 22-04-2019 - 13:48
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