CVE-2024-27389 Affecting kernel-livepatch-5_14_21-150400_24_119-default package, versions <1-150400.9.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-SLES154-KERNELLIVEPATCH5142115040024119DEFAULT-6846143
  • published15 May 2024
  • disclosed14 May 2024

Introduced: 14 May 2024

CVE-2024-27389  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-livepatch-5_14_21-150400_24_119-default to version 1-150400.9.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150400_24_119-default package and not the kernel-livepatch-5_14_21-150400_24_119-default package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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

pstore: inode: Only d_invalidate() is needed

Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning:

WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410

Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen.


CVSS Scores

version 3.1