CVE-2026-52920
netfilter: xt_policy: fix strict mode inbound policy matching
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
24 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
Affected products
Linux · LinuxWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://git.kernel.org/stable/c/392cc1d8408b5665215c1e9290bbf0f92339b043https://git.kernel.org/stable/c/4b2b4d7d4e203c92db8966b163edfacb1f0e1e29https://git.kernel.org/stable/c/82664d0f1ba25e4f9a71994954abae24c60f4067https://git.kernel.org/stable/c/938867e870fb5471bb16f442aeac81326e05bf65https://git.kernel.org/stable/c/b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9https://git.kernel.org/stable/c/eb323f7b82d2e2f638de0cc2a177803eb20e0707https://git.kernel.org/stable/c/f98b7f85e04b40e28b08c461ded0cc79f14f5509https://git.kernel.org/stable/c/fc1c518bb1f054831ecabb32da9b8e1dff9699c6