CVE-2026-64371

Description

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_access() with exec_update_lock (part 1) Fix the easy cases where procfs currently calls ptrace_may_access() without exec_update_lock protection, where the fix is to simply add the extra lock or use mm_access(): - do_task_stat(): grab exec_update_lock - proc_pid_wchan(): grab exec_update_lock - proc_map_files_lookup(): use mm_access() instead of get_task_mm() - proc_map_files_readdir(): use mm_access() instead of get_task_mm() - proc_ns_get_link(): grab exec_update_lock - proc_ns_readlink(): grab exec_update_lock

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4 https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69 https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0 https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9 https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7 https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3

Frequently Asked Questions

What is CVE-2026-64371? +

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_access() with exec_update_lock (part 1) Fix the easy cases where procfs currently calls ptrace_may_access() without exec_update_lock protection, where the fix is to simply add the extra lock or use mm_access(): - do_task_stat(): grab exec_update_lock - proc_pid_wchan(): grab exec_update_lock - proc_map_files_lookup(): use mm_access() instead of get_task_mm() - proc_map_files_readdir(): use mm_access() instead of get_task_mm() - proc_ns_get_link(): grab exec_update_lock - proc_ns_readlink(): grab exec_update_lock

How do I check if I'm vulnerable to CVE-2026-64371? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.