Input validation error in Linux kernel landlock

1) Input validation error

EUVDB-ID: #VU96210

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-2024-42318

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 improper input validation within the hook_cred_prepare() and hook_cred_free() functions in security/landlock/cred.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/0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c
http://git.kernel.org/stable/c/16896914bace82d7811c62f3b6d5320132384f49
http://git.kernel.org/stable/c/b14cc2cf313bd29056fadbc8ecd7f957cf5791ff
http://git.kernel.org/stable/c/39705a6c29f8a2b93cf5b99528a55366c50014d1
http://lore.kernel.org/all/20240817.shahka3Ee1iy@digikod.net/
http://www.openwall.com/lists/oss-security/2024/08/17/2
http://bugs.chromium.org/p/project-zero/issues/detail?id=2566

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.