Memory leak in Linux kernel netfilter

1) Memory leak

EUVDB-ID: #VU89990

Risk: Low

CVSSv3.1: 4.8 [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-2022-48691

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

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the nft_basechain_init() function in net/netfilter/nf_tables_api.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/910891a2a44cdc49efcc4fe7459c1085ba00d0f4
http://git.kernel.org/stable/c/1ce55ec5cb7c573c983dffbe290b8d17caf1f157
http://git.kernel.org/stable/c/94ed8eeb8d9aeb00e4f4e19b83a2e28b6442fbc5
http://git.kernel.org/stable/c/77972a36ecc4db7fc7c68f0e80714263c5f03f65

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.