Denial of service in Linux kernel IPsec

1) Memory leak

EUVDB-ID: #VU69706

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3629

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack.

The vulnerability exists due memory leak within the vsock_connect() function in net/vmw_vsock/af_vsock.c in Linux kernel IPSec implementation. A local user can force the system to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git/commit/?id=7e97cfed9929eaabc41829c395eb0d1350fccb9d
http://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

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.