Linux Kernel ksmbd RCU Callback Race Condition Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to execute arbitrary code on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of...

PT-2023-2825 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux Kernel affected versions not specified Description: The issue is related to a synchronization error in the rcu barrier function of the ksmbd module in the Linux kernel, which can be exploited to elevate privileges and execute arbitrary...

CLSA-2023-1682418814 Fix CVE(s): CVE-2023-1281, CVE-2022-3903, CVE-2023-26545

Ubuntu: 4.15.0-209.220 bionic/linux: 4.15.0-209.220 -proposed tracker LP: 2011989 CVE-2023-26545 - net: mpls: fix stale pointer if allocation fails during device rename CVE-2023-1281 - rcu: Upgrade rcuswapprotected to rcureplacepointer - net/sched: tcindex: update imperfect hash filters respectin...

CLSA-2023-1682416329 Fix CVE(s): CVE-2023-26545, CVE-2022-3903, CVE-2023-1281

Ubuntu: 4.15.0-209.220 bionic/linux: 4.15.0-209.220 -proposed tracker LP: 2011989 CVE-2023-26545 - net: mpls: fix stale pointer if allocation fails during device rename CVE-2023-1281 - rcu: Upgrade rcuswapprotected to rcureplacepointer - net/sched: tcindex: update imperfect hash filters respectin...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

GSD-2023-1002376 net/sched: tcindex: update imperfect hash filters respecting rcu

net/sched: tcindex: update imperfect hash filters respecting rcu This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.169 by commit...

SUSE CVE-2020-25598

An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEMacquireresource error path. The RCU Read, Copy, Update mechanism is a synchronisation primitive. A buggy error path in the XENMEMacquireresource exits without releasing an RCU reference, which is conceptually similar to...

SUSE CVE-2022-20153

In rcucblistdequeue of rcusegcblist.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroi...

GSD-2023-1001995 drm/vmwgfx: Remove rcu locks from user resources

drm/vmwgfx: Remove rcu locks from user resources This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.1.7 by commit...

GSD-2023-1001703 drm/vmwgfx: Remove rcu locks from user resources

drm/vmwgfx: Remove rcu locks from user resources This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.1.7 by commit...

PT-2023-34779 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.1.7 Description: The issue concerns the removal of rcu locks from user resources in the drm/vmwgfx component. It was introduced in version v4.20 and is fixed in Linux Kernel version v6.1.7. The actual impact...

GSD-2023-1001311 ovl: fix use inode directly in rcu-walk mode

ovl: fix use inode directly in rcu-walk mode This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit...

GSD-2023-1000979 ovl: fix use inode directly in rcu-walk mode

ovl: fix use inode directly in rcu-walk mode This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.86 by commit...

PT-2023-34056 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.15.86 Description: The issue concerns the use of an inode directly in RCU-walk mode. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel versions prior to...

PT-2023-33618 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.16 Description: The issue concerns the use of an inode directly in RCU-walk mode. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel versions prior to...

kernel: netfilter: conntrack: re-fetch conntrack after insertion

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb-nfct and set skb-nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the...

kernel: dm: fix use-after-free in dm_cleanup_zoned_dev()

In the Linux kernel, the following vulnerability has been resolved: dm: fix use-after-free in dmcleanupzoneddev dmcleanupzoneddev uses queue, so it must be called before blkcleanupdisk starts its killing: blkcleanupdisk-blkcleanupqueue-kobjectput-blkreleasequeue-...

kernel: inet: fully convert sk->sk_rx_dst to RCU rules

A use-after-free vulnerability was found in the TCP IP protocol in the Linux Kernel, where a delete operation of the RCU-protected pointer is supposed to clear the pointer before the callrcu/synchronizercu guarding the actual memory freeing. This flaw allows a local attacker to crash the system o...

GSD-2022-1006783 rcu-tasks: Ensure RCU Tasks Trace loops have quiescent states

rcu-tasks: Ensure RCU Tasks Trace loops have quiescent states This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.3 by commit...

PT-2022-35034 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.3 Description: The issue is related to the RCU Read-Copy Update mechanism in the Linux Kernel, specifically avoiding the triggering of strict-GP irq-work when RCU is idle. The actual impact and attack...