nouveau/dpcd: return EBUSY for aux xfer if the device is asleep

{
  "id": "e7fd7193d06f7b770b606b7693d3ffdf006db1d290d72637f7710cc21ccc2d25",
  "url": "https://osv.dev/vulnerability/CVE-2026-43381",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nouveau/dpcd: return EBUSY for aux xfer if the device is asleep",
    "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.",
    "evidence": "osv:CVE-2026-43381",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.253",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.203",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.167",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.130",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.78",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-43381",
      "aliases": [
        "CVE-2026-43381"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8894f4919bc43f821775db2cfff4b917871b2102"
                },
                {
                  "fixed": "178df7c91e6c202579284df9f79d1592a514cdcf"
                },
                {
                  "fixed": "4df518aa196085909fd7e32518ecd27fba60ed69"
                },
                {
                  "fixed": "cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c"
                },
                {
                  "fixed": "fad178ae894930520519ead3c8e0150641466360"
                },
                {
                  "fixed": "6bdd2d70c338d52c387d3b3aadc596784ae81b01"
                },
                {
                  "fixed": "ad8fa5bff53f5d1f8394f996850da8ce070eaee3"
                },
                {
                  "fixed": "24639553a016578222ac597db924dfb6fa5ec8b5"
                },
                {
                  "fixed": "8f3c6f08ababad2e3bdd239728cf66a9949446b4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43381.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.16.0"
                },
                {
                  "fixed": "5.10.253"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.203"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.167"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.130"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.78"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.19"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43381.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.136512633Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf",
        "https://git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5",
        "https://git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69",
        "https://git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01",
        "https://git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4",
        "https://git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3",
        "https://git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c",
        "https://git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43381.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43381",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43381.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43381",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521544,
  "published_at": "2026-05-08T14:21:29.34+00:00"
}