Vulnerability Details CVE-2022-48671
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 6.9%
CVSS Severity
CVSS v3 Score 5.5
References
- https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9
- https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff
- https://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6
- https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75
- https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e
- https://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d
- https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9
- https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff
- https://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6
- https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75
- https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e
- https://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d
Products affected by CVE-2022-48671
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cpe:2.3:o:linux:linux_kernel:5.10.143
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cpe:2.3:o:linux:linux_kernel:5.10.144
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cpe:2.3:o:linux:linux_kernel:5.15.69
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cpe:2.3:o:linux:linux_kernel:5.19.10
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cpe:2.3:o:linux:linux_kernel:5.19.9
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cpe:2.3:o:linux:linux_kernel:5.4.213
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cpe:2.3:o:linux:linux_kernel:5.4.214