CVE-2026-43381 (GCVE-0-2026-43381)
Vulnerability from cvelistv5
Published
2026-05-08 14:21
Modified
2026-05-11 22:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nouveau/dpcd: return EBUSY for aux xfer if the device is asleep If we have runtime suspended, and userspace wants to use /dev/drm_dp_* then just tell it the device is busy instead of crashing in the GSP code. WARNING: CPU: 2 PID: 565741 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/rpc.c:164 r535_gsp_msgq_wait+0x9a/0xb0 [nouveau] CPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x86_64 #1 PREEMPT(lazy) Hardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024 RIP: 0010:r535_gsp_msgq_wait+0x9a/0xb0 [nouveau] This is a simple fix to get backported. We should probably engineer a proper power domain solution to wake up devices and keep them awake while fw updates are happening.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
Version: 8894f4919bc43f821775db2cfff4b917871b2102
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/nouveau/nouveau_connector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
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            },
            {
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              "lessThanOrEqual": "*",
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              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:23:29.324Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
        }
      ],
      "title": "nouveau/dpcd: return EBUSY for aux xfer if the device is asleep",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43381",
    "datePublished": "2026-05-08T14:21:29.340Z",
    "dateReserved": "2026-05-01T14:12:56.006Z",
    "dateUpdated": "2026-05-11T22:23:29.324Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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