#VU93599 Resource management error in Linux kernel - CVE-2021-47410

Vulnerability identifier: #VU93599

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-2021-47410

CWE-ID: CWE-399

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 resource management error within the svm_migrate_init() function in drivers/gpu/drm/amd/amdkfd/kfd_migrate.c, within the kgd2kfd_device_exit() function in drivers/gpu/drm/amd/amdkfd/kfd_device.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.14, 5.14 rc1, 5.14 rc2, 5.14 rc3, 5.14 rc4, 5.14 rc7, 5.14.0-49.el9, 5.14.1, 5.14.2, 5.14.3, 5.14.4, 5.14.5, 5.14.6, 5.14.7, 5.14.8, 5.14.9, 5.14.10, 5.15 rc1, 5.15 rc2, 5.15 rc3, 5.15 rc4, 5.15 rc5, 5.15 rc6, 5.15 rc7

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External links
https://git.kernel.org/stable/c/ac7d732b24f4061f8a732ada49b054ab38c63e15
https://git.kernel.org/stable/c/197ae17722e989942b36e33e044787877f158574
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.11
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15

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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.