rhsa-2015_1977
Vulnerability from csaf_redhat
Published
2015-11-03 16:42
Modified
2024-11-14 16:32
Summary
Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

Notes

Topic
Updated kernel-rt packages that fix two security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate 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.
Details
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 VFS subsystem handled file system locks. A local, unprivileged user could use this flaw to trigger a deadlock in the kernel, causing a denial of service on the system. (CVE-2014-8559, Moderate) * A buffer overflow flaw was found in the way the Linux kernel's virtio-net subsystem handled certain fraglists when the GRO (Generic Receive Offload) functionality was enabled in a bridged network configuration. An attacker on the local network could potentially use this flaw to crash the system, or, although unlikely, elevate their privileges on the system. (CVE-2015-5156, Moderate) The CVE-2015-5156 issue was discovered by Jason Wang of Red Hat. The kernel-rt packages have been upgraded to version 3.10.0-229.20.1, which provides a number of bug fixes and enhancements over the previous version, including: * Unexpected completion is detected on Intel Ethernet x540 * Divide by zero error in intel_pstate_timer_func() [ inline s64 div_s64_rem() ] * NFS Recover from stateid-type error on SETATTR * pNFS RHEL 7.1 Data Server connection remains after umount due to lseg refcount leak * Race during NFS v4.0 recovery and standard IO. * Fix ip6t_SYNPROXY for namespaces and connection delay * synproxy window size and sequence number behaviour causes long connection delay * Crash in kmem_cache_alloc() during disk stress testing (using ipr) * xfs: sync/backport to upstream v4.1 * iscsi_session recovery_tmo revert back to default when a path becomes active * read from MD raid1 can fail if read from resync target fails * backport scsi-mq * unable to handle kernel paging request at 0000000000237037 [zswap] (BZ#1266915) All kernel-rt users are advised to upgrade to these updated packages, which correct these issues and add this enhancement. The system must be rebooted for this update to take effect.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "Updated kernel-rt packages that fix two security issues, several bugs, and\nadd one enhancement are now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having Moderate security\nimpact. Common Vulnerability Scoring System (CVSS) base scores, which give\ndetailed severity ratings, are available for each vulnerability from the\nCVE links in the References section.",
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        "text": "The kernel packages contain the Linux kernel, the core of any Linux\noperating system.\n\n* A flaw was found in the way the Linux kernel\u0027s VFS subsystem handled file\nsystem locks. A local, unprivileged user could use this flaw to trigger a\ndeadlock in the kernel, causing a denial of service on the system.\n(CVE-2014-8559, Moderate)\n\n* A buffer overflow flaw was found in the way the Linux kernel\u0027s virtio-net\nsubsystem handled certain fraglists when the GRO (Generic Receive Offload)\nfunctionality was enabled in a bridged network configuration. An attacker\non the local network could potentially use this flaw to crash the system,\nor, although unlikely, elevate their privileges on the system.\n(CVE-2015-5156, Moderate)\n\nThe CVE-2015-5156 issue was discovered by Jason Wang of Red Hat.\n\nThe kernel-rt packages have been upgraded to version 3.10.0-229.20.1, which\nprovides a number of bug fixes and enhancements over the previous version,\nincluding:\n\n* Unexpected completion is detected on Intel Ethernet x540\n\n* Divide by zero error in intel_pstate_timer_func() [ inline s64\ndiv_s64_rem() ]\n\n* NFS Recover from stateid-type error on SETATTR\n\n* pNFS RHEL 7.1 Data Server connection remains after umount due to lseg\nrefcount leak\n\n* Race during NFS v4.0 recovery and standard IO.\n\n* Fix ip6t_SYNPROXY for namespaces and connection delay\n\n* synproxy window size and sequence number behaviour causes long connection\ndelay\n\n* Crash in kmem_cache_alloc() during disk stress testing (using ipr)\n\n* xfs: sync/backport to upstream v4.1\n\n* iscsi_session recovery_tmo revert back to default when a path becomes\nactive\n\n* read from MD raid1 can fail if read from resync target fails\n\n* backport scsi-mq\n\n* unable to handle kernel paging request at 0000000000237037 [zswap]\n\n(BZ#1266915) \n\nAll kernel-rt users are advised to upgrade to these updated packages, which\ncorrect these issues and add this enhancement. The system must be rebooted\nfor this update to take effect.",
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}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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