Denial of service in Linux kernel SCTP subsystem

Published: 2024-04-22

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2024-0639
CWE-ID	CWE-667
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper locking

EUVDB-ID: #VU88894

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-0639

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to improper locking within the sctp_auto_asconf_init() function in net/sctp/socket.c. A local user can crash the kernel.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

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.