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
Affected versions
Linux kernel versions
2.6.27.23,
2.6.29.3,
2.6.30
and later are affected. Fixed in
5.10.261,
5.15.212,
6.1.178,
6.6.145,
6.12.97,
6.18.40,
7.1.4,
7.2-rc1
and their respective stable series.
References
8 totalFrequently asked questions
-
What is CVE-2026-64371?
CVE-2026-64371 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.27.23 onward and has been patched in 5.10.261, 5.15.212, 6.1.178 and others. CVE-2026-64371 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-64371?
Yes. CVE-2026-64371 has been patched. Fixed versions include 5.10.261, 5.15.212, 6.1.178 and others. If you are running Linux kernel 2.6.27.23 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-64371 actively exploited?
No. CVE-2026-64371 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.