NULL pointer dereference in Linux kernel drm scheduler

1) NULL pointer dereference

EUVDB-ID: #VU88146

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-2024-26657

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 a NULL pointer dereference error in drivers/gpu/drm/scheduler/sched_entity.c. A local user can send an amdgpu_cs_wait_ioctl to the AMDGPU DRM driver on any ASICs with valid context and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/f34e8bb7d6c6626933fe993e03ed59ae85e16abb
http://git.kernel.org/stable/c/74cd204c7afe498aa9dcc3ebf0ecac53d477a429
http://git.kernel.org/stable/c/54b5b7275dfdec35812ccce70930cd7c4ee612b2

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.