#VU73773 NULL pointer dereference in Linux kernel - CVE-2023-23004

Vulnerability identifier: #VU73773

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-2023-23004

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 a NULL pointer dereference error within the get_sg_table() function in drivers/gpu/drm/arm/malidp_planes.c. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.19, 5.19

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External links
https://github.com/torvalds/linux/commit/15342f930ebebcfe36f2415049736a77d7d2e045
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19

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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.