Improper Resource Locking Affecting kernel-64k-debug-modules-extra package, versions <0:5.14.0-284.90.1.el9_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL9-KERNEL64KDEBUGMODULESEXTRA-8312140
  • published31 Oct 2024
  • disclosed3 Apr 2024

Introduced: 3 Apr 2024

CVE-2024-26686  (opens in a new tab)
CWE-413  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-64k-debug-modules-extra to version 0:5.14.0-284.90.1.el9_2 or higher.
This issue was patched in RHSA-2024:8613.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-modules-extra package and not the kernel-64k-debug-modules-extra 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:

fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats

lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time.

Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.

CVSS Scores

version 3.1