{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-52930",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-52930",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-24T07:14:22.704Z",
    "updatedAt": "2026-10-15T01:21:54.648Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "ipc/shm: serialize orphan cleanup with shm_nattch updates",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nipc/shm: serialize orphan cleanup with shm_nattch updates\n\nshm_destroy_orphaned() walks the shm idr under shm_ids(ns).rwsem, but that\ndoes not serialize all fields tested by shm_may_destroy().  In particular,\nshm_nattch is updated while holding shm_perm.lock, and attach paths can do\nthat without holding the rwsem.\n\nDo not decide that an orphaned segment is unused before taking the object\nlock.  Move the shm_may_destroy() check under shm_perm.lock, matching the\nother destroy paths, and unlock the segment when it no longer qualifies\nfor removal.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b1e9aef48e4d8a0c1b54fb913077b0824ed7d650"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "92cda2593cf2ed25b0e9d78e5e6d8303bba1a064"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f0d01e35dbb228084d5187212e32c91a30dcbeb"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6560be3f6a5bb84f006f184f0c966747bb58e1a3"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b5107b4ce3ad45fcf369ee2058c8910620f4b5a8"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "db752ebfdaf2c7f27cd9690ef48b616af068319c"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "030bbc857bd51d4b25a90d931d3f8775ef22823a"
            },
            {
              "version": "4c677e2eefdba9c5bfc4474e2e91b26ae8458a1d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e5c6f4fd4001562781e99bbfc7f1f0127187542"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.1"
            },
            {
              "version": "5.10.259",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.94",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.36",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}