{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "129776ac2e38231fa9c02ce20e116c99de291666"
            },
            {
              "fixed": "2dd67966f39a2abf8ccb4865031c722e40e01b7f"
            },
            {
              "fixed": "08021f2d4a557d6491e3bcc288e96425f50aa3cf"
            },
            {
              "fixed": "f403094d9075d7c565a3d81002b781c325cb3c07"
            },
            {
              "fixed": "ee0180e77e6c8482644569632065411de844c515"
            },
            {
              "fixed": "2feec5ae5df785658924ab6bd91280dc3926507c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43007.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Handle DBC deactivation if the owner went away\n\nWhen a DBC is released, the device sends a QAIC_TRANS_DEACTIVATE_FROM_DEV\ntransaction to the host over the QAIC_CONTROL MHI channel. QAIC handles\nthis by calling decode_deactivate() to release the resources allocated for\nthat DBC. Since that handling is done in the qaic_manage_ioctl() context,\nif the user goes away before receiving and handling the deactivation, the\nhost will be out-of-sync with the DBCs available for use, and the DBC\nresources will not be freed unless the device is removed. If another user\nloads and requests to activate a network, then the device assigns the same\nDBC to that network, QAIC will \"indefinitely\" wait for dbc-\u003ein_use = false,\nleading the user process to hang.\n\nAs a solution to this, handle QAIC_TRANS_DEACTIVATE_FROM_DEV transactions\nthat are received after the user has gone away.",
  "id": "CVE-2026-43007",
  "modified": "2026-07-08T05:37:59.365510972Z",
  "published": "2026-05-01T14:15:14.914Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08021f2d4a557d6491e3bcc288e96425f50aa3cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2dd67966f39a2abf8ccb4865031c722e40e01b7f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2feec5ae5df785658924ab6bd91280dc3926507c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee0180e77e6c8482644569632065411de844c515"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f403094d9075d7c565a3d81002b781c325cb3c07"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43007.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43007"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "accel/qaic: Handle DBC deactivation if the owner went away"
}