CVE-2026-64371

high

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

References

https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3

https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7

https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e

https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9

https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d

https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0

https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69

https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4

Details

Source: Mitre, NVD

Published: 2026-07-25

Updated: 2026-07-25

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.0022