#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: 6.6 - 6.6.58, 6.11 - 6.11.5

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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
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.6
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.59

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?