SB20240608198 - Race condition in Linux kernel disp dpu1 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2023-52586)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/14f109bf74dd67e1d0469fed859c8e506b0df53f
• https://git.kernel.org/stable/c/45284ff733e4caf6c118aae5131eb7e7cf3eea5a
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8