CVE-2026-80875 (GCVE-0-2026-80875)

Vulnerability from cvelistv5 – Published: 2026-09-04 16:48 – Updated: 2026-09-04 16:48
VLAI
Title
ipvs: use parsed transport offset in TCP state lookup
Summary
In the Linux kernel, the following vulnerability has been resolved: ipvs: use parsed transport offset in TCP state lookup TCP state handling reparses the skb to find the TCP header. For IPv6 it uses sizeof(struct ipv6hdr), while the surrounding IPVS code already parsed the packet with ip_vs_fill_iph_skb() and has the real transport-header offset in iph.len. This makes TCP state handling look at the wrong bytes when an IPv6 packet carries extension headers. Use the parsed transport offset passed down from ip_vs_set_state() when reading the TCP header. For IPv4 and for IPv6 packets without extension headers, the passed offset matches the previous value.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 2d06e0897ce18228d199887f0823b431d841dd03 (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 816efb7fc0aeae986e63ac73b428dd97a4ef69f5 (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 5848e914b85e360a2dd9d19c00a72e2ea9617dd0 (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < d45f73c274435703e8d7bc9d8b742a5d9111ab6e (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < f6f550f26562d191c30b2818e7925dcb1c7f166c (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < d73f4249776dd970ad65a69cfc51613dd8a034bb (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < c2ee845e292c278fac75bf28d96bc892607fd5c4 (git)
Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 2500fa3958b1ba51c2b065e39db1b04dfa7e23a2 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.28
Unaffected: 0 , < 2.6.28 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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    "dateReserved": "2026-08-26T14:34:25.798Z",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.