{
  "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-2026-90322",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90322",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:08:38.768Z",
    "updatedAt": "2026-10-21T12:50:57.872Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "ocfs2/cluster: keep heartbeat local node stable",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2/cluster: keep heartbeat local node stable\n\no2nm_node_local_store() handles local=0 by stopping o2net and setting\ncl_local_node to O2NM_INVALID_NODE_NUM, but it leaves cl_has_local set. \nThat stale state makes o2nm_this_node() return 255, blocks a later local=1\nattempt with -EBUSY, and can feed 255 to heartbeat users that call\no2nm_this_node() dynamically.\n\nClearing cl_has_local is required when the local node is reset.  But\nheartbeat threads can still be running at that point.  They pin the local\nnode config item at startup, yet o2hb_do_disk_heartbeat() and thread\nteardown re-read o2nm_this_node() for the local slot and for\no2nm_undepend_this_node().  Once local=0 has cleared the live local-node\nstate, those dynamic reads return O2NM_MAX_NODES, which is also the\ninvalid node number 255.\n\nStore the local node number in the heartbeat region when the region\nstarts.  Use that stable node for heartbeat slot writes/checks,\nnegotiation messages, and the final configfs undepend.  Stop the heartbeat\nloop when the current local node no longer matches the stored node, and\nclear cl_has_local together with cl_local_node in the local=0 path so\nnodemanager state matches node removal.\n\nValidation reproduced this kernel report:\nKASAN slab-out-of-bounds in o2hb_do_disk_heartbeat+0x372/0xb30\nRIP: 0010:memset+0xf/0x20\nRead of size 8\nCall trace:\n  dump_stack_lvl+0x66/0xa0\n  print_report+0xd0/0x630\n  o2hb_do_disk_heartbeat+0x372/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  srso_alias_return_thunk+0x5/0xfbef5\n  __virt_addr_valid+0x188/0x2f0\n  kasan_report+0xe4/0x120\n  o2hb_do_disk_heartbeat+0x5/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  o2hb_thread+0x14e/0x770\n  kthread_affine_node+0x139/0x180\n  lockdep_hardirqs_on_prepare+0xda/0x190\n  trace_hardirqs_on+0x18/0x130\n  kthread+0x19d/0x1e0\n  ret_from_fork+0x37a/0x4d0\n  __switch_to+0x2d5/0x6f0\n  ret_from_fork_asm+0x1a/0x30",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d64708cc119db01fbc55017ee6e987b680ebd59c"
            },
            {
              "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8e5cb90f212fda9f6cd29915a1ed74353108ceb3"
            },
            {
              "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8abb2b7c60d2b2c0f40606048c873096c03874d2"
            },
            {
              "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "70d7bb7a0be033e5ebe8a2c48974692b1318891c"
            },
            {
              "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "688bc88e2046dd6ce81ce18079b5254cb8dadc0e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.16"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}