CVE-2026-64518Patch

LOW

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-07-25: 3Patch / Workaround · 2026-07-25: 1Technical Details · 2026-07-25: 207-25
Signal classification1 categories
Patch
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • CVE@CVEnew
    Patch

    CVE-2026-64518 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 a… https://www.cve.org/CVERecord?id=CVE-2026-64518

    Post summary

    CVE-2026-64518 is an out‑of‑bounds bug in the Linux kernel that has been fixed; technical details are provided, but no PoC, exploit, or active exploitation is reported.

    000111.2K
    57.9K followersView on X
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-64518 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 a… https://www.cve.org/CVERecord?id=CVE-2026-64518 ----- Traducción: CVE-2026-64518 En … http://infoflow.cloud`

    Post summary

    CVE‑2026‑64518, an out‑of‑bounds access issue in the Linux kernel, has been resolved; no PoC, exploit or active exploitation is reported.

    0000030
    95 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Patch

    CVE-2026-64518 In the Linux kernel, the following vulnerability has been resolved: tcp https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-64518

    Post summary

    The post announces that CVE-2026-64518 has been resolved in the Linux kernel, but provides no additional details or explicit patch information.

    00000129
    4.1K followersView on X

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