Improper Input Validation Affecting kernel-devel package, versions <0:5.14.0-284.92.1.el9_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELDEVEL-8368338
  • published13 Nov 2024
  • disclosed2 Mar 2024

Introduced: 2 Mar 2024

CVE-2023-52522  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-devel to version 0:5.14.0-284.92.1.el9_2 or higher.
This issue was patched in RHSA-2024:9497.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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

net: fix possible store tearing in neigh_periodic_work()

While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list.

Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing.

I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().

CVSS Scores

version 3.1