CVE-2026-72433: Linux kernel · netfilter: nft_meta_bridge: fix NFT_META_BRI_IIFPVID stack leak
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f73b7de5338fcca7f63ca88597a050c119501531 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 18:11 UTC
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
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- git.kernel.org/stable/c/c37a39b963034cc2d141baf46017614cb1fc275f (opens in a new tab)
- git.kernel.org/stable/c/a853c3769b73ceb2d2b735aff621d1d51fe0553d (opens in a new tab)
- git.kernel.org/stable/c/b1b0b9efe641afa5c2d4ba2ec77aed7b6f4bc398 (opens in a new tab)
- git.kernel.org/stable/c/f73b7de5338fcca7f63ca88597a050c119501531 (opens in a new tab)
- git.kernel.org/stable/c/92c9682b36f0c8f7a1f14d4558b72793f62e90a1 (opens in a new tab)
- git.kernel.org/stable/c/7e23965d44f06ed93fb5362fb1e321b769eecc3b (opens in a new tab)
- git.kernel.org/stable/c/4dce8bf588a89bef99b446136d15685a837e7acf (opens in a new tab)
- git.kernel.org/stable/c/27dd2997746d54ebc079bb13161cc1bdd401d4a6 (opens in a new tab)