Use-after-free in Linux kernel netfilter

1) Use-after-free

EUVDB-ID: #VU90160

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-35899

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the nf_tables_module_exit() function in net/netfilter/nf_tables_api.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/f4e14695fe805eb0f0cb36e0ad6a560b9f985e86
http://git.kernel.org/stable/c/46c4481938e2ca62343b16ea83ab28f4c1733d31
http://git.kernel.org/stable/c/f7e3c88cc2a977c2b9a8aa52c1ce689e7b394e49
http://git.kernel.org/stable/c/4e8447a9a3d367b5065a0b7abe101da6e0037b6e
http://git.kernel.org/stable/c/333b5085522cf1898d5a0d92616046b414f631a7
http://git.kernel.org/stable/c/d2c9eb19fc3b11caebafde4c30a76a49203d18a6
http://git.kernel.org/stable/c/24cea9677025e0de419989ecb692acd4bb34cac2

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.