{"id":"CVE-2023-52485","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Wake DMCUB before sending a command\n\n[Why]\nWe can hang in place trying to send commands when the DMCUB isn't\npowered on.\n\n[How]\nFor functions that exec…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Wake DMCUB before sending a command\n\n[Why]\nWe can hang in place trying to send commands when the DMCUB isn't\npowered on.\n\n[How]\nFor functions that exec…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 6.7.3"],"patched":["linux_kernel 6.7.3"],"published":"2024-02-29","updated":"2026-08-15","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-52485","references":[{"url":"https://git.kernel.org/stable/c/303197775a97416b62d4da69280d0c120a20e009","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8892780834ae294bc3697c7d0e056d7743900b39","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/303197775a97416b62d4da69280d0c120a20e009","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8892780834ae294bc3697c7d0e056d7743900b39","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00214,"epssPercentile":0.12051,"ingestedAt":"2026-08-15T13:26:43.576Z","slug":"CVE-2023-52485","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Wake DMCUB before sending a command\n\n[Why]\nWe can hang in place trying to send commands when the DMCUB isn't\npowered on.\n\n[How]\nFor functions that execute within a DC context or DC lock we can\nwrap the direct calls to dm_execute_dmub_cmd/list with code that\nexits idle power optimizations and reallows once we're done with\nthe command submission on success.\n\nFor DM direct submissions the DM will need to manage the enter/exit\nsequencing manually.\n\nWe cannot invoke a DMCUB command directly within the DM execution\nhelper or we can deadlock.\n\n## Affected\n\n- `linux_kernel < 6.7.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.7.3`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}