{
  "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-2026-80977",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80977",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:42:38.862Z",
    "updatedAt": "2026-10-19T08:46:01.788Z",
    "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": "net: skbuff: don't touch shared zerocopy state in skb_tx_error()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: don't touch shared zerocopy state in skb_tx_error()\n\nskb_tx_error() completes the zerocopy uarg and clears\nSKBFL_ALL_ZEROCOPY, and skb_zcopy_downgrade_managed() clears\nSKBFL_MANAGED_FRAG_REFS. Both live in skb_shinfo(), which every clone\nshares, while the caller only owns the reference it is about to drop.\nThrough a clone it tells the producer its pages are free and drops\nSKBFL_SHARED_FRAG for an skb that is still in flight.\n\nOpen vSwitch reaches this with a non-last OVS_ACTION_ATTR_RECIRC:\nclone_execute() sends a skb_clone() into ovs_dp_process_packet() while\ndo_execute_actions() keeps forwarding the original, and skb_clone()\ndoes not privatise the frags here -- skb_orphan_frags() returns early\non SKBFL_DONT_ORPHAN. A flow miss on the clone then strips the marker\nfrom the packet still being forwarded, and a later local ESP delivery\ndecrypts in place over frags it does not own privately.\n\nSkip it for a cloned skb. Nothing is lost: skb_release_data() clears\nthe zerocopy state once the last reference to the shared data goes.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6493165034bca14033bf49c9cec7b45e97a91497"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4452349dcf4d561e13be768d5d278de58248930"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "363c4252ffc473a0203e91b83ede5519dfb8bd07"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6ec22afc82a3cae07ade0a6ec361ae2532128ff5"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "15aa81b390d401abf4b8211042470e9e92e3b7fb"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "288f9970670841044ab030104fa6b6ed159949d0"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0370da114a9bc044e248b85c6809d1b5e0c1f7f9"
            },
            {
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f66bdb1cc0fcd227a062378f8be0b5873aa5600a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.8"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}