NULL pointer dereference in Linux kernel powerpc lib

1) NULL pointer dereference

EUVDB-ID: #VU97515

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-2024-46797

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 barrier() function in arch/powerpc/lib/qspinlock.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/d84ab6661e8d09092de9b034b016515ef9b66085
http://git.kernel.org/stable/c/f06af737e4be28c0e926dc25d5f0a111da4e2987
http://git.kernel.org/stable/c/734ad0af3609464f8f93e00b6c0de1e112f44559

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.