{"id":"CVE-2026-89820","state":"PUBLISHED","title":"drm/amd/display: fix dc_lock leak on GPU reset error paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix dc_lock leak on GPU reset error paths\n\nOn GPU reset, dm_suspend() takes dc_lock and leaves it for dm_resume()\nto drop. If amdgpu_dm_commit_zero_streams() or dm_dmub_hw_init() fails,\nthe function returns with the lock still held. The matching resume path\nis then skipped, so every later dc_lock take hangs.\n\nRelease the cached DC state and unlock before returning the error.","publishedAt":"2026-09-16T10:30:52.803Z","updatedAt":"2026-10-19T08:53:14.297Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"295d2bf42061db490254e748f9344545bb7faf19","versionType":"git"},{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"dac29cbb405b912742f4f7eda833cec8e7a53780","versionType":"git"},{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"92a9eebd2a1f892fe482154d83f9f1626bc73d3b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"]}],"references":["https://git.kernel.org/stable/c/295d2bf42061db490254e748f9344545bb7faf19","https://git.kernel.org/stable/c/dac29cbb405b912742f4f7eda833cec8e7a53780","https://git.kernel.org/stable/c/92a9eebd2a1f892fe482154d83f9f1626bc73d3b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89820.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89820","state":"PUBLISHED","datePublished":"2026-09-16T10:30:52.803Z","dateUpdated":"2026-10-19T08:53:14.297Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.768Z"},"containers":{"cna":{"title":"drm/amd/display: fix dc_lock leak on GPU reset error paths","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix dc_lock leak on GPU reset error paths\n\nOn GPU reset, dm_suspend() takes dc_lock and leaves it for dm_resume()\nto drop. If amdgpu_dm_commit_zero_streams() or dm_dmub_hw_init() fails,\nthe function returns with the lock still held. The matching resume path\nis then skipped, so every later dc_lock take hangs.\n\nRelease the cached DC state and unlock before returning the error."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"295d2bf42061db490254e748f9344545bb7faf19","versionType":"git"},{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"dac29cbb405b912742f4f7eda833cec8e7a53780","versionType":"git"},{"version":"3cf7a0bc87f028b6bc63a43a80d9d6026ae4d85f","status":"affected","lessThan":"92a9eebd2a1f892fe482154d83f9f1626bc73d3b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/295d2bf42061db490254e748f9344545bb7faf19"},{"url":"https://git.kernel.org/stable/c/dac29cbb405b912742f4f7eda833cec8e7a53780"},{"url":"https://git.kernel.org/stable/c/92a9eebd2a1f892fe482154d83f9f1626bc73d3b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:53:14.297Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}