CVE-2022-48671

low-risk
Published 2024-05-03

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.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (12)

Patch https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9
Patch https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff
Patch https://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6
Patch https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75
Patch https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e
Patch https://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d
Patch https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9
Patch https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff
Patch https://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6
Patch https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75
Patch https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e
Patch https://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal