Use After Free Affecting kernel-livepatch-6.1.102-108.177 package, versions <0:1.0-0.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIVEPATCH61102108177-7709672
  • published20 Aug 2024
  • disclosed29 Jul 2024

Introduced: 29 Jul 2024

CVE-2024-41049  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-livepatch-6.1.102-108.177 to version 0:1.0-0.amzn2023 or higher.
This issue was patched in ALAS2023-2024-679.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6.1.102-108.177 package and not the kernel-livepatch-6.1.102-108.177 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

filelock: fix potential use-after-free in posix_lock_inode

Light Hsieh reported a KASAN UAF warning in trace_posix_lock_inode(). The request pointer had been changed earlier to point to a lock entry that was added to the inode's list. However, before the tracepoint could fire, another task raced in and freed that lock.

Fix this by moving the tracepoint inside the spinlock, which should ensure that this doesn't happen.

CVSS Scores

version 3.1