CVE-2026-80875: Linux kernel · ipvs: use parsed transport offset in TCP state lookup
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f6f550f26562d191c30b2818e7925dcb1c7f166c : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:34 UTC
Rated Medium 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 f6f550f26562d191c30b2818e7925dcb1c7f166c, d73f4249776dd970ad65a69cfc51613dd8a034bb, d45f73c274435703e8d7bc9d8b742a5d9111ab6e +5
Exploitation evidence
Disclosed: evidence found.
CVE published 4 Sep 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 Linux kernel versions following 2.6.28. Users should update to a fixed kernel version containing the referenced commits to remediate this issue.
Description
A vulnerability in the Linux kernel's IP Virtual Server (ipvs) TCP state handling was fixed. The issue involved incorrect parsing of the TCP header offset for IPv6 packets with extension headers, causing the TCP state lookup to read incorrect bytes. This flaw was resolved by using the already parsed transport offset rather than a fixed size assumption. The vulnerability affects Linux kernel version 2.6.28 and was addressed in subsequent commits.
References
- git.kernel.org/stable/c/2d06e0897ce18228d199887f0823b431d841dd03 (opens in a new tab)
- git.kernel.org/stable/c/816efb7fc0aeae986e63ac73b428dd97a4ef69f5 (opens in a new tab)
- git.kernel.org/stable/c/5848e914b85e360a2dd9d19c00a72e2ea9617dd0 (opens in a new tab)
- git.kernel.org/stable/c/d45f73c274435703e8d7bc9d8b742a5d9111ab6e (opens in a new tab)
- git.kernel.org/stable/c/f6f550f26562d191c30b2818e7925dcb1c7f166c (opens in a new tab)
- git.kernel.org/stable/c/d73f4249776dd970ad65a69cfc51613dd8a034bb (opens in a new tab)
- git.kernel.org/stable/c/c2ee845e292c278fac75bf28d96bc892607fd5c4 (opens in a new tab)
- git.kernel.org/stable/c/2500fa3958b1ba51c2b065e39db1b04dfa7e23a2 (opens in a new tab)