RHSA-2020:1016
Vulnerability from csaf_redhat - Published: 2020-03-31 20:33 - Updated: 2026-06-28 09:05A vulnerability was found in the Linux kernel’s CX24116 tv-card driver, where an out of bounds read occurs when checking userspace params in drivers/media/dvb-frontends/cx24116.c. An attacker could use this flaw to leak kernel private information to userspace.
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')| Product | Identifier | Version | Remediation |
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| Unresolved product id: 7Client-7.8:bpftool-0:3.10.0-1127.el7.x86_64 | — |
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| Unresolved product id: 7Client-optional-7.8:kernel-tools-debuginfo-0:3.10.0-1127.el7.x86_64 | — |
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| Unresolved product id: 7ComputeNode-optional-7.8:kernel-tools-debuginfo-0:3.10.0-1127.el7.x86_64 | — |
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The KEYS subsystem in the Linux kernel omitted an access-control check when writing a key to the current task's default keyring, allowing a local user to bypass security checks to the keyring. This compromises the validity of the keyring for those who rely on it.
CWE-862 - Missing AuthorizationA flaw was found in the Linux kernel's implementation of networking tunnel device ioctl. A local attacker can cause a denial of service (NULL pointer dereference and panic) via an ioctl (TUNSETIFF) call with a dev name containing a / character.
A flaw was found in the Linux kernel in the function hso_probe() which reads if_num value from the USB device (as an u8) and uses it without a length check to index an array, resulting in an OOB memory read in hso_probe() or hso_get_config_data(). An attacker with a forged USB device and physical access to a system (needed to connect such a device) can cause a system crash and a denial of service.
A flaw was discovered in the Linux kernel's USB subsystem in the __usb_get_extra_descriptor() function in the drivers/usb/core/usb.c which mishandles a size check during the reading of an extra descriptor data. By using a specially crafted USB device which sends a forged extra descriptor, an unprivileged user with physical access to the system can potentially cause a privilege escalation or trigger a system crash or lock up and thus to cause a denial of service (DoS).
A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls.
A flaw was found in the Linux kernel’s implementation of the WiFi station handoff code. An attacker within the radio range could use this flaw to deny a valid device from joining the access point.
If the brcmfmac driver receives a firmware event frame from a remote source, the is_wlc_event_frame function will cause this frame to be discarded and not be processed. If the driver receives the firmware event frame from the host, the appropriate handler is called. This frame validation can be bypassed if the bus used is USB (for instance by a WiFi dongle). This can allow firmware event frames from a remote source to be processed and this can result in denial of service (DoS) condition.
A flaw was found in the Linux kernel’s Bluetooth implementation of UART. An attacker with local access and write permissions to the Bluetooth hardware could use this flaw to issue a specially crafted ioctl function call and cause the system to crash.
A flaw was found in the way the Linux kernel derived the IP ID field from a partial kernel space address returned by a net_hash_mix() function. A remote user could observe a weak IP ID generation in this field to track Linux devices.
CWE-1241 - Use of Predictable Algorithm in Random Number GeneratorA flaw was found in the way the Linux kernel derived the IP ID field from a partial kernel space address returned by a net_hash_mix() function. A remote user could observe this IP ID field to extract the kernel address bits used to derive its value, which may result in leaking the hash key and potentially defeating KASLR.
CWE-200 - Exposure of Sensitive Information to an Unauthorized ActorA flaw in the load_elf_binary() function in the Linux kernel allows a local attacker to leak the base address of .text and stack sections for setuid binaries and bypass ASLR because install_exec_creds() is called too late in this function.
CWE-250 - Execution with Unnecessary PrivilegesA flaw was found in the Linux kernel's implementation of the Bluetooth Human Interface Device Protocol (HIDP). A local attacker with access permissions to the Bluetooth device can issue an IOCTL which will trigger the do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c.c. This function can leak potentially sensitive information from the kernel stack memory via a HIDPCONNADD command because a name field may not be correctly NULL terminated.
A flaw was found in the Linux kernel’s implementation of Extended Display Identification Data (EDID) technology. A firmware identifier string is duplicated with the kstrdup function, and the allocation may fail under very low memory conditions. An attacker could abuse this flaw by causing a Denial of Service and crashing the system.
A vulnerability was found in the arch/x86/lib/insn-eval.c function in the Linux kernel. An attacker could corrupt the memory due to a flaw in use-after-free access to an LDT entry caused by a race condition between modify_ldt() and a #BR exception for an MPX bounds violation.
A flaw was found in the PowerPc platform, where the kernel will panic if the transactional memory is disabled. An attacker could use this flaw to panic the system by constructing a signal context through the transactional memory MSR bits set.
A vulnerability was found in the Linux kernel’s floppy disk driver implementation. A local attacker with access to the floppy device could call set_geometry in drivers/block/floppy.c, which does not validate the sect and head fields, causing an integer overflow and out-of-bounds read. This flaw may crash the system or allow an attacker to gather information causing subsequent successful attacks.
A flaw was found in the Linux kernel’s implementation of the Marvell wifi driver, which can allow a local user who has CAP_NET_ADMIN or administrative privileges to possibly cause a Denial Of Service (DOS) by corrupting memory and possible code execution.
A vulnerability found in the Linux kernel's WMM implementation for Marvell WiFi-based hardware (mwifiex) could lead to a denial of service or allow arbitrary code execution. For this flaw to be executed, the attacker must be both local and privileged. There is no mitigation to this flaw. A patch has been provided to remediate this flaw.
An out-of-bounds (OOB) memory access flaw was found in the Qlogic ISCSI module in the Linux kernel's qedi_dbg_* family of functions in drivers/scsi/qedi/qedi_dbg.c. Here a local attacker with a special user privilege account (or a root) can cause an out-of-bound memory access leading to a system crash or a leak of internal kernel information.
A vulnerability was found in the Linux kernel’s core sound driver code. A use-after-free in a race condition between disconnection events could allow a local attacker who can trigger disconnection events (remove or add hardware) to crash the system, corrupt memory, or escalate privileges.
A NULL pointer dereference flaw was found in the way the LINE6 drivers in the Linux kernel allocated buffers for USB packets. This flaw allows an attacker with physical access to the system to crash the system.
A flaw that allowed an attacker to leak kernel memory was found in the network subsystem where an attacker with permissions to create tun/tap devices can create a denial of service and panic the system.
A flaw in the Linux kernel's WiFi beacon validation code was discovered. The code does not check the length of the variable length elements in the beacon head potentially leading to a buffer overflow. System availability, as well as data confidentiality and integrity, can be impacted by this vulnerability.
A flaw was found in the way the Linux kernel implemented a software flush of the Count Cache (indirect branch cache) and Link (Return Address) Stack on the PowerPC platform. The flushing of these structures helps to prevent SpectreRSB like attacks which may leak information from one user process to another. An unprivileged user could use this flaw to cross the syscall or process boundary and read privileged memory by conducting targeted cache side-channel attacks.
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.