Improper locking in Linux kernel cgroup

1) Improper locking

EUVDB-ID: #VU90763

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48671

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the cgroup_attach_task_all() function in kernel/cgroup/cgroup-v1.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/321488cfac7d0eb6d97de467015ff754f85813ff
http://git.kernel.org/stable/c/07191f984842d50020789ff14c75da436a7f46a9
http://git.kernel.org/stable/c/9f267393b036f1470fb12fb892d59e7ff8aeb58d
http://git.kernel.org/stable/c/5db17805b6ba4c34dab303f49aea3562fc25af75
http://git.kernel.org/stable/c/99bc25748e394d17f9e8b10cc7f273b8e64c1c7e
http://git.kernel.org/stable/c/43626dade36fa74d3329046f4ae2d7fdefe401c6

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.