Bug 2492112 (CVE-2026-52920) - CVE-2026-52920 kernel: netfilter: xt_policy: fix strict mode inbound policy matching
Summary: CVE-2026-52920 kernel: netfilter: xt_policy: fix strict mode inbound policy m...
Keywords:
Status: NEW
Alias: CVE-2026-52920
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 08:02 UTC by OSIDB Bzimport
Modified: 2026-08-26 04:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:59723 0 None None None 2026-08-26 04:35:25 UTC

Description OSIDB Bzimport 2026-06-24 08:02:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: xt_policy: fix strict mode inbound policy matching

match_policy_in() walks sec_path entries from the last transform to the
first one, but strict policy matching needs to consume info->pol[] in
the same forward order as the rule layout.

Derive the strict-match policy position from the number of transforms
already consumed so that multi-element inbound rules are matched
consistently.
Comment 1 Mauro Matteo Cascella 2026-06-24 10:08:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062430-CVE-2026-52920-22f8@gregkh/T
Comment 5 errata-xmlrpc 2026-08-26 04:35:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:59723 https://access.redhat.com/errata/RHSA-2026:59723
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