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VulnerabilityPublished Updated

CVE-2026-72433: Linux kernel · netfilter: nft_meta_bridge: fix NFT_META_BRI_IIFPVID stack leak

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f73b7de5338fcca7f63ca88597a050c119501531 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 18:11 UTC

Severity
Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in f73b7de5338fcca7f63ca88597a050c119501531, c37a39b963034cc2d141baf46017614cb1fc275f, b1b0b9efe641afa5c2d4ba2ec77aed7b6f4bc398 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < f73b7de5338fcca7f63ca88597a050c119501531
Fixed in
  • f73b7de5338fcca7f63ca88597a050c119501531
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < c37a39b963034cc2d141baf46017614cb1fc275f
Fixed in
  • c37a39b963034cc2d141baf46017614cb1fc275f
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < b1b0b9efe641afa5c2d4ba2ec77aed7b6f4bc398
Fixed in
  • b1b0b9efe641afa5c2d4ba2ec77aed7b6f4bc398
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < a853c3769b73ceb2d2b735aff621d1d51fe0553d
Fixed in
  • a853c3769b73ceb2d2b735aff621d1d51fe0553d
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < 92c9682b36f0c8f7a1f14d4558b72793f62e90a1
Fixed in
  • 92c9682b36f0c8f7a1f14d4558b72793f62e90a1
LinuxLinuxAffected
  • ≥ c54c7c685494fc0f1662091d4d0c4fc26e810471, < 27dd2997746d54ebc079bb13161cc1bdd401d4a6
Fixed in
  • 27dd2997746d54ebc079bb13161cc1bdd401d4a6

AI-suggested

A fix is available and has been applied in the Linux kernel after version 5.3. Users and administrators should update their Linux kernel to a fixed version containing the referenced commits to remediate this vulnerability.

Description

A stack leak vulnerability in the Linux kernel's netfilter nft_meta_bridge component (NFT_META_BRI_IIFPVID) has been fixed. The issue involved improper handling of a nonzero return value leading to a stack leak. The vulnerability affects Linux kernel version 5.3 and has been resolved in subsequent commits.

References

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