CVE-2026-97596

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 5677e81ffdbfc1c03dcb427fb8b1c38289bed76daffected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < d4eb339b442a0ffaa565779b975494a0a0664f18affected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 1a8f15911352bb3cf4663aa02049c49c7f30e524affected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 652d9caa5ac925ab012834e325d77b9ed638d4fcaffected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < fc10dc4511e6e2e2b4098ee115c8e5639471f23daffected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 50c3f06222eafe9cca7ca51a0ef83311d7cab353affected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 0c61f7d8e18a978aec2a16d9acd5f682f1c72476affected
LinuxLinux275411430f892407b885be1de2548b2e632892c3 < 74cb39735b6cd0aff4b5584158f09376fd97aadfaffected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References