{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5ab829f1971dc99f2aac10846c378e67fc875abc"
            },
            {
              "fixed": "095417d6b669c2dec39a5842ccb94df915f97f54"
            },
            {
              "fixed": "2446d099350185caeed19ab2c0270451a97296fb"
            },
            {
              "fixed": "d119bd2e1643cc023210ff3c6f0657e4f914e71d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45955.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/md-llbitmap: fix percpu_ref not resurrected on suspend timeout\n\nWhen llbitmap_suspend_timeout() times out waiting for percpu_ref to\nbecome zero, it returns -ETIMEDOUT without resurrecting the percpu_ref.\nThe caller (md_llbitmap_daemon_fn) then continues to the next page\nwithout calling llbitmap_resume(), leaving the percpu_ref in a killed\nstate permanently.\n\nFix this by resurrecting the percpu_ref before returning the error,\nensuring the page control structure remains usable for subsequent\noperations.",
  "id": "CVE-2026-45955",
  "modified": "2026-07-08T05:36:26.313924351Z",
  "published": "2026-05-27T12:18:10.951Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45955.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45955"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout"
}