{
  "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-2026-80862",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80862",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-04T15:55:16.653Z",
    "updatedAt": "2026-10-21T12:47:08.178Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "nvme-tcp: fix usage of page_frag_cache",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix usage of page_frag_cache\n\nnvme uses page_frag_cache to preallocate PDU for each preallocated request\nof block device. Block devices are created in parallel threads,\nconsequently page_frag_cache is used in not thread-safe manner.\nThat leads to incorrect refcounting of backstore pages and premature free.\n\nThat can be catched by !sendpage_ok inside network stack:\n\nWARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310.\n\ttcp_sendmsg_locked+0x782/0xce0\n\ttcp_sendmsg+0x27/0x40\n\tsock_sendmsg+0x8b/0xa0\n\tnvme_tcp_try_send_cmd_pdu+0x149/0x2a0\nThen random panic may occur.\n\nFix that by serializing the usage of page_frag_cache.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d19f98c79f1b7e09e4cdf5c20d626e571e487467"
            },
            {
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "status": "affected",
              "versionType": "git",
              "lessThan": "64561afb42d8390695bf810d9bbd087cbca00291"
            },
            {
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0a9750263ffacbbd2048a391fd4bd22e2146c57d"
            },
            {
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e4cf281558709b92ec2ca3054fe2ffc69266ef9"
            },
            {
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "status": "affected",
              "versionType": "git",
              "lessThan": "36ac05f7cfd59d90c597071304b14e98090d5dd1"
            },
            {
              "version": "c57506918b078ecab7dedebef0f34dbc23ae2e46",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.6.160",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.7"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.12"
            },
            {
              "version": "6.12.108",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}