#VU86245 Improper locking in Linux kernel - CVE-2024-0641

Vulnerability identifier: #VU86245

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-2024-0641

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 malicious guest to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to double-locking error within the tipc_crypto_key_revoke() function in net/tipc/crypto.c. A malicious guest can exploit this vulnerability to cause a deadlock, resulting in a denial of service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.6, 6.6

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External links
https://access.redhat.com/security/cve/CVE-2024-0641
https://bugzilla.redhat.com/show_bug.cgi?id=2258757
https://github.com/torvalds/linux/commit/08e50cf071847323414df0835109b6f3560d44f5

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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.