Local denial of service in Linux kernel nf_tables

1) Input validation error

EUVDB-ID: #VU89269

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-2024-26609

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to QUEUE/DROP verdict parameters are rejected within the nft_verdict_init() function in net/netfilter/nf_tables_api.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.8 rc2

External links

http://git.kernel.org/stable/c/8365e9d92b85fda975a5ece7a3a139cb964018c8
http://git.kernel.org/stable/c/4e66422f1b56149761dc76030e6345d1cca6f869
http://git.kernel.org/stable/c/55a60251fa50d4e68175e36666b536a602ce4f6c
http://git.kernel.org/stable/c/960cf4f812530f01f6acc6878ceaa5404c06af7b
http://git.kernel.org/stable/c/8e34430e33b8a80bc014f3efe29cac76bc30a4b4
http://git.kernel.org/stable/c/6653118b176a00915125521c6572ae8e507621db
http://git.kernel.org/stable/c/f05a497e7bc8851eeeb3a58da180ba469efebb05
http://git.kernel.org/stable/c/f342de4e2f33e0e39165d8639387aa6c19dff660
http://bugzilla.redhat.com/show_bug.cgi?id=2269217
http://lore.kernel.org/linux-cve-announce/20240229155245.1571576-41-lee@kernel.org/T/#u

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.