#VU97313 Improper locking in Linux kernel - CVE-2024-46713

Vulnerability identifier: #VU97313

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-2024-46713

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 ring_buffer_init() function in kernel/events/ring_buffer.c, within the put_ctx(), perf_mmap_close(), perf_mmap() and atomic_dec() functions in kernel/events/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/7882923f1cb88dc1a17f2bf0c81b1fc80d44db82
https://git.kernel.org/stable/c/52d13d224fdf1299c8b642807fa1ea14d693f5ff
https://git.kernel.org/stable/c/9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d
https://git.kernel.org/stable/c/c4b69bee3f4ef76809288fe6827bc14d4ae788ef
https://git.kernel.org/stable/c/b9b6882e243b653d379abbeaa64a500182aba370
https://git.kernel.org/stable/c/2ab9d830262c132ab5db2f571003d80850d56b2a

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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.