{"id":"CVE-2026-43381","state":"PUBLISHED","title":"nouveau/dpcd: return EBUSY for aux xfer if the device is asleep","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnouveau/dpcd: return EBUSY for aux xfer if the device is asleep\n\nIf we have runtime suspended, and userspace wants to use /dev/drm_dp_*\nthen just tell it the device is busy instead of crashing in the GSP\ncode.\n\nWARNING: CPU: 2 PID: 565741 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/rpc.c:164 r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]\nCPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x86_64 #1 PREEMPT(lazy)\nHardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024\nRIP: 0010:r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]\n\nThis is a simple fix to get backported. We should probably engineer a\nproper power domain solution to wake up devices and keep them awake\nwhile fw updates are happening.","publishedAt":"2026-05-08T14:21:29.340Z","updatedAt":"2026-05-11T22:23:29.324Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"178df7c91e6c202579284df9f79d1592a514cdcf","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"4df518aa196085909fd7e32518ecd27fba60ed69","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"fad178ae894930520519ead3c8e0150641466360","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"6bdd2d70c338d52c387d3b3aadc596784ae81b01","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"ad8fa5bff53f5d1f8394f996850da8ce070eaee3","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"24639553a016578222ac597db924dfb6fa5ec8b5","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"8f3c6f08ababad2e3bdd239728cf66a9949446b4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/nouveau/nouveau_connector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.16","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/nouveau/nouveau_connector.c"]}],"references":["https://git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf","https://git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69","https://git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c","https://git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360","https://git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01","https://git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3","https://git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5","https://git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43381.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43381","state":"PUBLISHED","datePublished":"2026-05-08T14:21:29.340Z","dateUpdated":"2026-05-11T22:23:29.324Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.006Z"},"containers":{"cna":{"title":"nouveau/dpcd: return EBUSY for aux xfer if the device is asleep","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnouveau/dpcd: return EBUSY for aux xfer if the device is asleep\n\nIf we have runtime suspended, and userspace wants to use /dev/drm_dp_*\nthen just tell it the device is busy instead of crashing in the GSP\ncode.\n\nWARNING: CPU: 2 PID: 565741 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/rpc.c:164 r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]\nCPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x86_64 #1 PREEMPT(lazy)\nHardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024\nRIP: 0010:r535_gsp_msgq_wait+0x9a/0xb0 [nouveau]\n\nThis is a simple fix to get backported. We should probably engineer a\nproper power domain solution to wake up devices and keep them awake\nwhile fw updates are happening."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"178df7c91e6c202579284df9f79d1592a514cdcf","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"4df518aa196085909fd7e32518ecd27fba60ed69","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"fad178ae894930520519ead3c8e0150641466360","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"6bdd2d70c338d52c387d3b3aadc596784ae81b01","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"ad8fa5bff53f5d1f8394f996850da8ce070eaee3","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"24639553a016578222ac597db924dfb6fa5ec8b5","versionType":"git"},{"version":"8894f4919bc43f821775db2cfff4b917871b2102","status":"affected","lessThan":"8f3c6f08ababad2e3bdd239728cf66a9949446b4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/nouveau/nouveau_connector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.16","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/nouveau/nouveau_connector.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf"},{"url":"https://git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69"},{"url":"https://git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c"},{"url":"https://git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360"},{"url":"https://git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01"},{"url":"https://git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3"},{"url":"https://git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5"},{"url":"https://git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:23:29.324Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.18.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.19.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}