SB2026090575 - Incorrect calculation in Linux kernel netfilter ipvs
Published: September 5, 2026
Security Bulletin ID
SB2026090575
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2026-80875)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause incorrect TCP state handling.
The vulnerability exists due to an incorrect transport-header offset calculation in the IPVS TCP state lookup when processing IPv6 packets with extension headers. A remote attacker can send a crafted IPv6 packet with extension headers to cause incorrect TCP state handling.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2500fa3958b1ba51c2b065e39db1b04dfa7e23a2
- https://git.kernel.org/stable/c/2d06e0897ce18228d199887f0823b431d841dd03
- https://git.kernel.org/stable/c/5848e914b85e360a2dd9d19c00a72e2ea9617dd0
- https://git.kernel.org/stable/c/816efb7fc0aeae986e63ac73b428dd97a4ef69f5
- https://git.kernel.org/stable/c/c2ee845e292c278fac75bf28d96bc892607fd5c4
- https://git.kernel.org/stable/c/d45f73c274435703e8d7bc9d8b742a5d9111ab6e
- https://git.kernel.org/stable/c/d73f4249776dd970ad65a69cfc51613dd8a034bb
- https://git.kernel.org/stable/c/f6f550f26562d191c30b2818e7925dcb1c7f166c