Vulnerability identifier: #VU91486

Vulnerability risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-52586

CWE-ID: CWE-362

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 escalate privileges on the system.

The vulnerability exists due to a race condition within the dpu_encoder_phys_vid_control_vblank_irq(), dpu_encoder_phys_vid_irq_control() and dpu_encoder_phys_vid_init() functions in drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c, within the dpu_encoder_phys_cmd_control_vblank_irq(), dpu_encoder_phys_cmd_irq_control() and dpu_encoder_phys_cmd_init() functions in drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c, within the dpu_encoder_phys_init() function in drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/14f109bf74dd67e1d0469fed859c8e506b0df53f
http://git.kernel.org/stable/c/45284ff733e4caf6c118aae5131eb7e7cf3eea5a

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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.