#VU94279 Improper locking in Linux kernel - CVE-2024-40922

Vulnerability identifier: #VU94279

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-2024-40922

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 io_rsrc_ref_quiesce() function in io_uring/rsrc.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/0c9df3df0c888d9ec8d11a68474a4aa04d371cff
https://git.kernel.org/stable/c/4429c6c77e176a4c5aa7a3bbd1632f9fc0582518
https://git.kernel.org/stable/c/54559642b96116b45e4b5ca7fd9f7835b8561272

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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.