#VU92912 NULL pointer dereference in Linux kernel - CVE-2022-48749

Vulnerability identifier: #VU92912

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-2022-48749

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 dpu_setup_dspp_pcc() function in drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.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/93a6e920d8ccb4df846c03b6e72f7e08843d294c
https://git.kernel.org/stable/c/8f069f6dde518dfebe86e848508c07e497bd9298
https://git.kernel.org/stable/c/1ebc18836d5df09061657f8c548e594cbb519476
https://git.kernel.org/stable/c/170b22234d5495f5e0844246e23f004639ee89ba

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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.