CVE-2024-27393 Affecting kernel-rt package, versions <0:5.14.0-284.71.1.rt14.356.el9_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELRT-7395293
  • published26 Jun 2024
  • disclosed8 May 2024

Introduced: 8 May 2024

CVE-2024-27393  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:9 kernel-rt to version 0:5.14.0-284.71.1.rt14.356.el9_2 or higher.
This issue was patched in RHSA-2024:4106.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt 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:

xen-netfront: Add missing skb_mark_for_recycle

Notice that skb_mark_for_recycle() is introduced later than fixes tag in commit 6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling").

It is believed that fixes tag were missing a call to page_pool_release_page() between v5.9 to v5.14, after which is should have used skb_mark_for_recycle(). Since v6.6 the call page_pool_release_page() were removed (in commit 535b9c61bdef ("net: page_pool: hide page_pool_release_page()") and remaining callers converted (in commit 6bfef2ec0172 ("Merge branch 'net-page_pool-remove-page_pool_release_page'")).

This leak became visible in v6.8 via commit dba1b8a7ab68 ("mm/page_pool: catch page_pool memory leaks").

CVSS Scores

version 3.1