CVE-2022-48671: falha de média gravidade em Linux
cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.5epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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Referências
https://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9https://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ffhttps://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6https://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75https://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7ehttps://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d