CVE-2024-26739 Affecting kernel package, versions <0:5.14.0-427.37.1.el9_4


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNEL-8100023
  • published27 Sept 2024
  • disclosed3 Apr 2024

Introduced: 3 Apr 2024

CVE-2024-26739  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel to version 0:5.14.0-427.37.1.el9_4 or higher.
This issue was patched in ELSA-2024-6997.

NVD Description

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

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

net/sched: act_mirred: don't override retval if we already lost the skb

If we're redirecting the skb, and haven't called tcf_mirred_forward(), yet, we need to tell the core to drop the skb by setting the retcode to SHOT. If we have called tcf_mirred_forward(), however, the skb is out of our hands and returning SHOT will lead to UaF.

Move the retval override to the error path which actually need it.

CVSS Scores

version 3.1