{
  "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-2026-68155",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-68155",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-10T11:59:21.200Z",
    "updatedAt": "2026-10-19T20:58:54.643Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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: Reject monmaps advertising zero monitors",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Reject monmaps advertising zero monitors\n\nA message of type CEPH_MSG_MON_MAP contains a monmap that is sent from a\nmonitor to the client. This monmap contains information about the\nexisting monitors in the cluster. Currently, a monmap indicating that\nthere are zero monitors in the cluster is treated as valid. However, it\nis impossible to have zero monitors in the cluster and still receive a\nvalid monmap from a monitor. Therefore, such a monmap must be corrupted\nand should be treated as invalid. Furthermore, a monmap with a monitor\ncount of zero can subsequently crash the client when attempting to open\na session with a monitor in __open_session(). This happens because the\n\"BUG_ON(monc->monmap->num_mon < 1)\" assertion in pick_new_mon() is\ntriggered.\n\nThis patch extends a check in ceph_monmap_decode() to also reject\narriving mon_maps with num_mon == 0 rather than only with\nnum_mon > CEPH_MAX_MON.\n\n[ idryomov: drop \"log output for unusual values of num_mon\" part ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba5f0015bfd376d764163045a61c17be75f44dae"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "caf082ef8609a6ac26159ce115f55ab7d00231a3"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3ccd4ecab09b22f507f49cb7ed9990c7158ceab"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0591a15815b498be628a937146e44487d599ba33"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cd0d41bc569632eaaeccde9d2a6bc919ec00c407"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e67e8b694872c9bc66996040f9de9242f6236ed9"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b249546f59c3d6d3592c10657f82bc3f1faa07c"
            },
            {
              "version": "ba75bb98cfb93b62c54af25bf67ff90857264bbe",
              "status": "affected",
              "versionType": "git",
              "lessThan": "40480eee361ed9676b3f844d532ac28b47251634"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.34",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.34"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.148",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.101",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}