CVE-2026-80669: Linux kernel · bpf: Disable xfrm_decode_session hook attachment
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in aa265d47308775c5501073b08133623bcb5421f9 : patch Linux kernel soon.
Data as of 6 Nov 2026, 17:41 UTC
Rated High by Threat Radar's AI analysis · 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 aa265d47308775c5501073b08133623bcb5421f9, 12091470c6b4c1c14b2de12dcbae2ada6cb6d20b, 49fa1be621dde8f526d36e5791aded8fafda1e9c +3
Exploitation evidence
Disclosed: evidence found.
CVE published 28 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 commits identified by the fixedVersions hashes. Users should update their Linux kernel to a version that includes these commits to mitigate the vulnerability. No additional action is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel allows BPF LSM programs to attach to the xfrm_decode_session() hook, which can cause a kernel panic due to a BUG_ON() triggered when the hook returns an error. This issue has been resolved by disabling BPF attachment to this hook to prevent such panics.
References
- git.kernel.org/stable/c/aa265d47308775c5501073b08133623bcb5421f9 (opens in a new tab)
- git.kernel.org/stable/c/6b44c6660aa1c9b843e450a623ac4a8484919dce (opens in a new tab)
- git.kernel.org/stable/c/4ae780d173ef40d4f7cb76935dc2d55fbf380009 (opens in a new tab)
- git.kernel.org/stable/c/49fa1be621dde8f526d36e5791aded8fafda1e9c (opens in a new tab)
- git.kernel.org/stable/c/1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9 (opens in a new tab)
- git.kernel.org/stable/c/12091470c6b4c1c14b2de12dcbae2ada6cb6d20b (opens in a new tab)