CVE-2026-64518
CVE-2026-64518: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
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Red Hat
1 advisory- Advisory severityUnrated
Advisory [CVE-2026-64518] Fix out-of-bounds access for twsk in tcp_ao_established_key
CVE-2026-64518Source published Source updated
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. An out-of-bounds access vulnerability exists when the `lockdep_sock_is_held()` function is called with a `tcp_timewait_sock` object. This occurs because the `tcp_timewait_sock` object lacks the necessary…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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