{"id":"CVE-2026-43305","title":"drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path\n\n[Why]\nThe evaluation for whether we need to use the DMUB HW lock isn't the\nsame as whether we…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 7d041982fe11fff29b32a09228c4d52f159b56ad < 4e387ad67efb100b645630ffbce7716786f52283","Linux >= 7d041982fe11fff29b32a09228c4d52f159b56ad < af3303970da5ce5bfe6dffdd07f38f42aad603e0","Linux 6.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:34:51.818525Z"},"published":"2026-05-08","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:42:47.470Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43305","references":[{"url":"https://git.kernel.org/stable/c/4e387ad67efb100b645630ffbce7716786f52283"},{"url":"https://git.kernel.org/stable/c/af3303970da5ce5bfe6dffdd07f38f42aad603e0"}],"tags":["cve.org"],"epss":0.00083,"epssPercentile":0.00223,"ingestedAt":"2026-11-06T15:54:03.943Z","slug":"CVE-2026-43305","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path\n\n[Why]\nThe evaluation for whether we need to use the DMUB HW lock isn't the\nsame as whether we need to unlock which results in a hang when the\nfast path is used for ASIC without FAMS support.\n\n[How]\nStore a flag that indicates whether we should use the lock and use\nthat same flag to specify whether unlocking is needed.\n\n## Affected\n\n- `Linux >= 7d041982fe11fff29b32a09228c4d52f159b56ad < 4e387ad67efb100b645630ffbce7716786f52283`\n- `Linux >= 7d041982fe11fff29b32a09228c4d52f159b56ad < af3303970da5ce5bfe6dffdd07f38f42aad603e0`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}