NULL pointer dereference in Linux kernel amd amdkfd driver



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-21940
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU106706

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-21940

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 kfd_queue_acquire_buffers() function in drivers/gpu/drm/amd/amdkfd/kfd_queue.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12 - 6.13.6

CPE2.3 External links

https://git.kernel.org/stable/c/33eb8041c5d6c19d46e7bfd23a031844336afd80
https://git.kernel.org/stable/c/c3cbeafb4e0001d9146df50b470885e02664f3c7
https://git.kernel.org/stable/c/fd617ea3b79d2116d53f76cdb5a3601c0ba6e42f
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14


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.



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