Local denial of service in Linux kernel netfilter

1) Memory leak

EUVDB-ID: #VU89385

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-2023-52581

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 on the target system.

The vulnerability exists due memory leak within the nft_trans_gc_space() function in net/netfilter/nf_tables_api.c. 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/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14
http://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5
http://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01
http://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8
http://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171
http://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07

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.