NULL pointer dereference in Linux kernel netfilter

1) NULL pointer dereference

EUVDB-ID: #VU94260

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-2024-39504

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference within the nft_payload_inner_init() function in net/netfilter/nft_payload.c, within the nft_meta_inner_init() function in net/netfilter/nft_meta.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/b30669fdea0ca03aa22995e6c99f7e7d9dee89ff
http://git.kernel.org/stable/c/39323f54cad29602917848346c71b087da92a19d
http://git.kernel.org/stable/c/c4ab9da85b9df3692f861512fe6c9812f38b7471

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.