{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198"
            },
            {
              "fixed": "86771c105293ca26bfcc320b4f60d32c137b54aa"
            },
            {
              "fixed": "42eab80981f4d2ac820e253e80ecf92f8cd91f69"
            },
            {
              "fixed": "6ad491cef1a812cf7b53aa769cd8869516c47362"
            },
            {
              "fixed": "e77594e0cea67ab1c2317a27aa77a744e26ad6a6"
            },
            {
              "fixed": "8b301c4afbce4bc3f94528441d8d5ce1366504ad"
            }
          ],
          "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": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93097.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/mbox: Break poison list loop on an empty payload\n\nA device that returns count == 0 with CXL_POISON_FLAG_MORE set on every\niteration never advances nr_records, so the max_errors guard never\ntrips and the do/while loops forever while holding poison.mutex. That\nhangs the sysfs-triggered scan thread and blocks all subsequent poison\noperations on the device. The existing \"Protect against an uncleared\n_FLAG_MORE\" guard was intended to bound a misbehaving device but does\nnot cover the count == 0 case.\n\nStop the loop on an empty payload so a malfunctioning or malicious\ndevice cannot wedge the poison scan.",
  "id": "CVE-2026-93097",
  "modified": "2026-09-18T03:30:20.542063141Z",
  "published": "2026-09-17T16:11:11.025Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42eab80981f4d2ac820e253e80ecf92f8cd91f69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ad491cef1a812cf7b53aa769cd8869516c47362"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86771c105293ca26bfcc320b4f60d32c137b54aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b301c4afbce4bc3f94528441d8d5ce1366504ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e77594e0cea67ab1c2317a27aa77a744e26ad6a6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93097.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93097"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "cxl/mbox: Break poison list loop on an empty payload"
}