CVE-2026-53236 Affecting kernel-doc package, versions <0:4.18.0-553.178.1.el8_10


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.13% (2nd 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-ROCKY8-KERNELDOC-21742719
  • published27 Oct 2026
  • disclosed25 Jun 2026

Introduced: 25 Jun 2026

CVE-2026-53236  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-doc to version 0:4.18.0-553.178.1.el8_10 or higher.
This issue was patched in RLSA-2026:89083.

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 Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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

tcp: restrict SO_ATTACH_FILTER to priv users

This patch restricts the use of SO_ATTACH_FILTER (cBPF) on TCP sockets to users with CAP_NET_ADMIN capability.

This blocks potential side-channel attack where an unprivileged application attaches a filter to leak TCP sequence/acknowledgment numbers.

CVSS Base Scores

version 3.1