CVE-2022-48671

MEDIUM
Published May 3, 2024 Modified Nov 21, 2024 CWE-667

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-667 CWE-667

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2022-48671? +
CVE-2022-48671 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2022-48671? +
CVE-2022-48671 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2022-48671? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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