{
  "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-2026-22991",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-22991",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-01-23T15:24:12.191Z",
    "updatedAt": "2026-10-19T18:25:26.442Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "libceph: make free_choose_arg_map() resilient to partial allocation",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: make free_choose_arg_map() resilient to partial allocation\n\nfree_choose_arg_map() may dereference a NULL pointer if its caller fails\nafter a partial allocation.\n\nFor example, in decode_choose_args(), if allocation of arg_map->args\nfails, execution jumps to the fail label and free_choose_arg_map() is\ncalled. Since arg_map->size is updated to a non-zero value before memory\nallocation, free_choose_arg_map() will iterate over arg_map->args and\ndereference a NULL pointer.\n\nTo prevent this potential NULL pointer dereference and make\nfree_choose_arg_map() more resilient, add checks for pointers before\niterating.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b3730dabcf3764bfe3ff07caf55e641a0b45234"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "851241d3f78a5505224dc21c03d8692f530256b4"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ec1850f663da64842614c86b20fe734be070c2ba"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8081faaf089db5280c3be820948469f7c58ef8dd"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdf"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f21c3fdb96833aac2f533506899fe38c19cf49d5"
            },
            {
              "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3fe30e57649c551757a02e1cad073c47e1e075e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.13"
            },
            {
              "version": "5.10.248",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.198",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.161",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.66",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}