CVE-2026-97596

ipvs: reject invalid states in connection template sync records

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 24, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ipvs: reject invalid states in connection template sync records

IPVS sync receivers validate protocol states before creating or updating a connection. For connection templates, however, they only log states outside the template state range and still store the value in the connection.

A template can be returned by ordinary connection lookup. TCP and SCTP then use the invalid state as an index into their transition tables.

Reject invalid template states in both sync protocol versions before looking up or modifying a connection. The version 1 path handles both IPv4 and IPv6 records.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	275411430f892407b885be1de2548b2e632892c3 to before 5677e81ffdbfc1c03dcb427fb8b1c38289bed76dAffected 275411430f892407b885be1de2548b2e632892c3 to before d4eb339b442a0ffaa565779b975494a0a0664f18Affected 275411430f892407b885be1de2548b2e632892c3 to before 1a8f15911352bb3cf4663aa02049c49c7f30e524Affected 275411430f892407b885be1de2548b2e632892c3 to before 652d9caa5ac925ab012834e325d77b9ed638d4fcAffected 275411430f892407b885be1de2548b2e632892c3 to before fc10dc4511e6e2e2b4098ee115c8e5639471f23dAffected 275411430f892407b885be1de2548b2e632892c3 to before 50c3f06222eafe9cca7ca51a0ef83311d7cab353Affected 275411430f892407b885be1de2548b2e632892c3 to before 0c61f7d8e18a978aec2a16d9acd5f682f1c72476Affected 275411430f892407b885be1de2548b2e632892c3 to before 74cb39735b6cd0aff4b5584158f09376fd97aadfAffected
LinuxLinux	4.19Affected before 4.19Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

275411430f892407b885be1de2548b2e632892c3 to before 5677e81ffdbfc1c03dcb427fb8b1c38289bed76dAffected
275411430f892407b885be1de2548b2e632892c3 to before d4eb339b442a0ffaa565779b975494a0a0664f18Affected
275411430f892407b885be1de2548b2e632892c3 to before 1a8f15911352bb3cf4663aa02049c49c7f30e524Affected
275411430f892407b885be1de2548b2e632892c3 to before 652d9caa5ac925ab012834e325d77b9ed638d4fcAffected
275411430f892407b885be1de2548b2e632892c3 to before fc10dc4511e6e2e2b4098ee115c8e5639471f23dAffected
275411430f892407b885be1de2548b2e632892c3 to before 50c3f06222eafe9cca7ca51a0ef83311d7cab353Affected
275411430f892407b885be1de2548b2e632892c3 to before 0c61f7d8e18a978aec2a16d9acd5f682f1c72476Affected
275411430f892407b885be1de2548b2e632892c3 to before 74cb39735b6cd0aff4b5584158f09376fd97aadfAffected

LinuxLinux

4.19Affected
before 4.19Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

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