CVE-2026-64518 - tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key().

CVE-2026-64518 - tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key().

https://cvefeed.io/rssfeed/latest.atom / Sat, 07/25/2026 - 13:07
CVE ID :CVE-2026-64518
Published : July 25, 2026, 10:17 a.m. | 33 minutes ago
Description :In the Linux kernel, the following vulnerability has been resolved: tcp: Fix out-of-bounds access for twsk in tcp_ao_established_key(). lockdep_sock_is_held() was added in tcp_ao_established_key() by the cited commit. It can be called from tcp_v[46]_timewait_ack() with twsk. Since it does not have sk->sk_lock, the lockdep annotation results in out-of-bound access. $ pahole -C tcp_timewait_sock vmlinux | grep size /* size: 288, cachelines: 5, members: 8 */ $ pahole -C sock vmlinux | grep sk_lock socket_lock_t sk_lock; /* 440 192 */ Let's not use lockdep_sock_is_held() for TCP_TIME_WAIT.
Severity: 0.0 | NA
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