#VU100076 Improper locking in Linux kernel - CVE-2024-50140

Vulnerability identifier: #VU100076

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-50140

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to improper locking within the task_work_add() function in kernel/task_work.c, within the task_tick_mm_cid() function in kernel/sched/core.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

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External links
https://git.kernel.org/stable/c/509c29d0d26f68a6f6d0a05cb1a89725237e2b87
https://git.kernel.org/stable/c/ce0241ef83eed55f675376e8a3605d23de53d875
https://git.kernel.org/stable/c/73ab05aa46b02d96509cb029a8d04fca7bbde8c7

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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.