CVE-2022-48671

cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()

State: Published
Severity: 5.5 Medium
Published: May 3, 2024
Updated: May 11, 2026
Reserved: Feb 25, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()

syzbot is hitting percpu_rwsem_assert_held(&cpu_hotplug_lock) warning at cpuset_attach() [1], for commit 4f7e7236435ca0ab ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock") missed that cpuset_attach() is also called from cgroup_attach_task_all(). Add cpus_read_lock() like what cgroup_procs_write_start() does.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-667 Improper Locking

Affected Products

Product	Versions
LinuxLinux	e446300968c6bd25d9cd6c33b9600780a39b3975 to before 321488cfac7d0eb6d97de467015ff754f85813ffAffected 59c6902a96b4439e07c25ef86a4593bea5481c3b to before 07191f984842d50020789ff14c75da436a7f46a9Affected dee1e2b18cf5426eed985512ccc6636ec69dbdd6 to before 9f267393b036f1470fb12fb892d59e7ff8aeb58dAffected 3bf4bf54069f9b62a54988e5d085023c17a66c90 to before 5db17805b6ba4c34dab303f49aea3562fc25af75Affected c0deb027c99c099aa6b831e326bfba802b25e774 to before 99bc25748e394d17f9e8b10cc7f273b8e64c1c7eAffected 4f7e7236435ca0abe005c674ebd6892c6e83aeb3 to before 43626dade36fa74d3329046f4ae2d7fdefe401c6Affected
LinuxLinux	5.4.213 to before 5.4.215Affected 5.10.143 to before 5.10.145Affected 5.15.68 to before 5.15.70Affected 5.19.9 to before 5.19.11Affected

Product

Versions

LinuxLinux

e446300968c6bd25d9cd6c33b9600780a39b3975 to before 321488cfac7d0eb6d97de467015ff754f85813ffAffected
59c6902a96b4439e07c25ef86a4593bea5481c3b to before 07191f984842d50020789ff14c75da436a7f46a9Affected
dee1e2b18cf5426eed985512ccc6636ec69dbdd6 to before 9f267393b036f1470fb12fb892d59e7ff8aeb58dAffected
3bf4bf54069f9b62a54988e5d085023c17a66c90 to before 5db17805b6ba4c34dab303f49aea3562fc25af75Affected
c0deb027c99c099aa6b831e326bfba802b25e774 to before 99bc25748e394d17f9e8b10cc7f273b8e64c1c7eAffected
4f7e7236435ca0abe005c674ebd6892c6e83aeb3 to before 43626dade36fa74d3329046f4ae2d7fdefe401c6Affected

LinuxLinux

5.4.213 to before 5.4.215Affected
5.10.143 to before 5.10.145Affected
5.15.68 to before 5.15.70Affected
5.19.9 to before 5.19.11Affected

References

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