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medium5.5

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 p…

Impact

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 products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.27.23 before 2.6.28
from 2.6.29.3 before 2.6.30
from 2.6.30.1 before 5.10.261
from 5.11 before 5.15.212
from 5.16 before 6.1.178
from 6.2 before 6.6.145

References