#VU93606 Improper Initialization in Linux kernel - CVE-2021-47551

Vulnerability identifier: #VU93606

Vulnerability 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-2021-47551

CWE-ID: CWE-665

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper initialization within the stop_cpsch() function in drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.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

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External links
https://git.kernel.org/stable/c/74aafe99efb68f15e50be9f7032c2168512f98a8
https://git.kernel.org/stable/c/06c6f8f86ec243b89e52f0c3dc7062bcb9de74df
https://git.kernel.org/stable/c/2cf49e00d40d5132e3d067b5aa6d84791929ab15

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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.