NULL pointer dereference in Linux kernel swsmu smu11 driver

1) NULL pointer dereference

EUVDB-ID: #VU90562

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-2024-26949

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 smu_v13_0_7_get_power_limit() function in drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c, within the smu_v13_0_0_get_power_limit() function in drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c, within the sienna_cichlid_get_power_limit() function in drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c, within the navi10_get_power_limit() function in drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c, within the arcturus_get_power_limit() function in drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/99c2f1563b1400cc8331fc79d19ada1bb95bb388
https://git.kernel.org/stable/c/b8eaa8ef1f1157a9f330e36e66bdd7a693309948
https://git.kernel.org/stable/c/08ae9ef829b8055c2fdc8cfee37510c1f4721a07

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.