Use After Free Affecting kernel-doc package, versions <0:3.10.0-1160.102.1.0.1.el7


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.46% (37th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELDOC-5960870
  • published12 Oct 2023
  • disclosed21 Jul 2023

Introduced: 21 Jul 2023

CVE-2023-3609  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-doc to version 0:3.10.0-1160.102.1.0.1.el7 or higher.
This issue was patched in ELSA-2023-5622.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

CVSS Base Scores

version 3.1