{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/cancel.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "94d13387b96e50a4288f7bbdfe401189246a11a1",
              "status": "affected",
              "version": "360cd42c4e95ff06d8d7b0a54e42236c7e7c187f",
              "versionType": "git"
            },
            {
              "lessThan": "3005459e0ddfcef0f555b6e81f672f2c49a1c0aa",
              "status": "affected",
              "version": "360cd42c4e95ff06d8d7b0a54e42236c7e7c187f",
              "versionType": "git"
            },
            {
              "lessThan": "fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7",
              "status": "affected",
              "version": "360cd42c4e95ff06d8d7b0a54e42236c7e7c187f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/cancel.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.59",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.13",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/cancel: don\u0027t spin on local work the task can\u0027t run\n\nio_uring_cancel_generic() refuses to sleep while any ring on the exiting\ntask\u0027s tctx has local work pending. It assumes the task is that ring\u0027s\nsubmitter and that the next io_uring_try_cancel_requests() pass will run\nthe work. This does not hold for a ring that was still\nIORING_SETUP_R_DISABLED when the task got its tctx node from\nio_uring_create() or io_ringfd_register(). The submitter is set later by\nIORING_REGISTER_ENABLE_RINGS, possibly from another task, and only the\nsubmitter may run local work on an IORING_SETUP_DEFER_TASKRUN ring. To\nthe exiting task the work stays pending forever, the loop never reaches\nschedule(), and the task trips the WARN_ON_ONCE() once and then spins in\ndo_exit().\n\nAn unprivileged user can set this up at will by creating a disabled\nring, having a child enable it and stop, posting to the ring with\nIORING_OP_MSG_RING and exiting with a request in flight that only the\nchild can complete. The exiting thread burns a CPU until the child runs\nor dies, and with panic_on_warn set the WARN panics the kernel.\n\nFix by skipping the sleep only when io_allowed_defer_tw_run() allows the\ntask to run the work. This is reasonable since work it cannot run cannot\ncomplete any of its requests either, so nothing is lost by sleeping.\nDrop the WARN_ON_ONCE() since handing a disabled ring to another thread\nis a supported scenario, not a bug state."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T10:34:43.514Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/94d13387b96e50a4288f7bbdfe401189246a11a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/3005459e0ddfcef0f555b6e81f672f2c49a1c0aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7"
        }
      ],
      "title": "io_uring/cancel: don\u0027t spin on local work the task can\u0027t run",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99130",
    "datePublished": "2026-10-28T10:34:43.514Z",
    "dateReserved": "2026-09-25T10:25:14.394Z",
    "dateUpdated": "2026-10-28T10:34:43.514Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}