CVE-2026-64371

Updated on 25 Jul 2026

Severity

5.5 Medium severity

Details

CVSS score
5.5
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

About vulnerability

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

Details

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
Amazon Linux 2023 Planned
Debian 11 Planned
Debian 11 cloud Planned
Debian 12 Planned
Debian 13 Planned
Oracle Linux 9 UEK 7 Planned