Denial of service in Linux kernel TIPC subsystem

1) Improper locking

EUVDB-ID: #VU86245

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-0641

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

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 rc5

External links

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

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.