CVE-2025-71148 PUBLISHED

net/handshake: restore destructor on submit failure

Assigner: Linux
Reserved: 13.01.2026 Published: 23.01.2026 Updated: 23.01.2026

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

net/handshake: restore destructor on submit failure

handshake_req_submit() replaces sk->sk_destruct but never restores it when submission fails before the request is hashed. handshake_sk_destruct() then returns early and the original destructor never runs, leaking the socket. Restore sk_destruct on the error path.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 3b3009ea8abb713b022d94fba95ec270cf6e7eae to cd8cf2be3717137554744233fda051ffc09d1d44 (excl.)
  • affected from 3b3009ea8abb713b022d94fba95ec270cf6e7eae to 7b82a1d6ae869533d8bdb0282a3a78faed8e63dd (excl.)
  • affected from 3b3009ea8abb713b022d94fba95ec270cf6e7eae to b225325be7b247c7268e65eea6090db1fc786d1f (excl.)
  • affected from 3b3009ea8abb713b022d94fba95ec270cf6e7eae to 6af2a01d65f89e73c1cbb9267f8880d83a88cee4 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.4 is affected
  • unaffected from 0 to 6.4 (excl.)
  • unaffected from 6.6.120 to 6.6.* (incl.)
  • unaffected from 6.12.64 to 6.12.* (incl.)
  • unaffected from 6.18.3 to 6.18.* (incl.)
  • unaffected from 6.19-rc2 to * (incl.)

References