{"api_version":"1","generated_at":"2026-05-13T12:03:26+00:00","cve":"CVE-2026-43305","urls":{"html":"https://cve.report/CVE-2026-43305","api":"https://cve.report/api/cve/CVE-2026-43305.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43305","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43305"},"summary":{"title":"drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path","description":"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 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 14:16:37","updated_at":"2026-05-12 14:10:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/4e387ad67efb100b645630ffbce7716786f52283","name":"https://git.kernel.org/stable/c/4e387ad67efb100b645630ffbce7716786f52283","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/af3303970da5ce5bfe6dffdd07f38f42aad603e0","name":"https://git.kernel.org/stable/c/af3303970da5ce5bfe6dffdd07f38f42aad603e0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43305","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43305","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7d041982fe11fff29b32a09228c4d52f159b56ad 4e387ad67efb100b645630ffbce7716786f52283 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7d041982fe11fff29b32a09228c4d52f159b56ad af3303970da5ce5bfe6dffdd07f38f42aad603e0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.6 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43305","cve":"CVE-2026-43305","epss":"0.000180000","percentile":"0.050790000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4e387ad67efb100b645630ffbce7716786f52283","status":"affected","version":"7d041982fe11fff29b32a09228c4d52f159b56ad","versionType":"git"},{"lessThan":"af3303970da5ce5bfe6dffdd07f38f42aad603e0","status":"affected","version":"7d041982fe11fff29b32a09228c4d52f159b56ad","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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 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."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:21:59.194Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4e387ad67efb100b645630ffbce7716786f52283"},{"url":"https://git.kernel.org/stable/c/af3303970da5ce5bfe6dffdd07f38f42aad603e0"}],"title":"drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43305","datePublished":"2026-05-08T13:11:24.952Z","dateReserved":"2026-05-01T14:12:56.000Z","dateUpdated":"2026-05-11T22:21:59.194Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 14:16:37","lastModifiedDate":"2026-05-12 14:10:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43305","Ordinal":"1","Title":"drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS ","CVE":"CVE-2026-43305","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43305","Ordinal":"1","NoteData":"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 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.","Type":"Description","Title":"drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS "}]}}}