#VU92917 NULL pointer dereference in Linux kernel - CVE-2023-52883

Vulnerability identifier: #VU92917

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-2023-52883

CWE-ID: CWE-476

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 NULL pointer dereference within the amdgpu_vm_bo_update() function in drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.5, 6.5 rc1, 6.5 rc5, 6.5 rc7, 6.5.1, 6.5.2, 6.5.3, 6.5.4, 6.5.5, 6.5.6, 6.5.7, 6.5.8, 6.6 rc1, 6.6 rc2, 6.6 rc3, 6.6 rc4, 6.6 rc5, 6.6 rc6

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External links
https://git.kernel.org/stable/c/fefac8c4686fd81fde6830c6dae32f9001d2ac28
https://git.kernel.org/stable/c/51b79f33817544e3b4df838d86e8e8e4388ff684
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6

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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.