Vulnerability-Lookup

FKIE_CVE-2026-80977

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skb_tx_error() skb_tx_error() completes the zerocopy uarg and clears SKBFL_ALL_ZEROCOPY, and skb_zcopy_downgrade_managed() clears SKBFL_MANAGED_FRAG_REFS. Both live in skb_shinfo(), which every clone shares, while the caller only owns the reference it is about to drop. Through a clone it tells the producer its pages are free and drops SKBFL_SHARED_FRAG for an skb that is still in flight. Open vSwitch reaches this with a non-last OVS_ACTION_ATTR_RECIRC: clone_execute() sends a skb_clone() into ovs_dp_process_packet() while do_execute_actions() keeps forwarding the original, and skb_clone() does not privatise the frags here -- skb_orphan_frags() returns early on SKBFL_DONT_ORPHAN. A flow miss on the clone then strips the marker from the packet still being forwarded, and a later local ESP delivery decrypts in place over frags it does not own privately. Skip it for a cloned skb. Nothing is lost: skb_release_data() clears the zerocopy state once the last reference to the shared data goes.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0370da114a9bc044e248b85c6809d1b5e0c1f7f9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/15aa81b390d401abf4b8211042470e9e92e3b7fb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/288f9970670841044ab030104fa6b6ed159949d0
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/363c4252ffc473a0203e91b83ede5519dfb8bd07
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6493165034bca14033bf49c9cec7b45e97a91497
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6ec22afc82a3cae07ade0a6ec361ae2532128ff5
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b4452349dcf4d561e13be768d5d278de58248930
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f66bdb1cc0fcd227a062378f8be0b5873aa5600a

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6493165034bca14033bf49c9cec7b45e97a91497",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "b4452349dcf4d561e13be768d5d278de58248930",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "363c4252ffc473a0203e91b83ede5519dfb8bd07",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "6ec22afc82a3cae07ade0a6ec361ae2532128ff5",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "15aa81b390d401abf4b8211042470e9e92e3b7fb",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "288f9970670841044ab030104fa6b6ed159949d0",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "0370da114a9bc044e248b85c6809d1b5e0c1f7f9",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "f66bdb1cc0fcd227a062378f8be0b5873aa5600a",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: don\u0027t 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."
    }
  ],
  "id": "CVE-2026-80977",
  "lastModified": "2026-09-14T13:18:52.487",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-11T20:19:04.013",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0370da114a9bc044e248b85c6809d1b5e0c1f7f9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15aa81b390d401abf4b8211042470e9e92e3b7fb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/288f9970670841044ab030104fa6b6ed159949d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/363c4252ffc473a0203e91b83ede5519dfb8bd07"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6493165034bca14033bf49c9cec7b45e97a91497"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ec22afc82a3cae07ade0a6ec361ae2532128ff5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b4452349dcf4d561e13be768d5d278de58248930"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f66bdb1cc0fcd227a062378f8be0b5873aa5600a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-80977 (GCVE-0-2026-80977)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:42 – Updated: 2026-09-14 11:59

Title

net: skbuff: don't touch shared zerocopy state in skb_tx_error()

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/6493165034bca1403…
https://git.kernel.org/stable/c/b4452349dcf4d561e…
https://git.kernel.org/stable/c/363c4252ffc473a02…
https://git.kernel.org/stable/c/6ec22afc82a3cae07…
https://git.kernel.org/stable/c/15aa81b390d401abf…
https://git.kernel.org/stable/c/288f9970670841044…
https://git.kernel.org/stable/c/0370da114a9bc044e…
https://git.kernel.org/stable/c/f66bdb1cc0fcd227a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 6493165034bca14033bf49c9cec7b45e97a91497 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < b4452349dcf4d561e13be768d5d278de58248930 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 363c4252ffc473a0203e91b83ede5519dfb8bd07 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 6ec22afc82a3cae07ade0a6ec361ae2532128ff5 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 15aa81b390d401abf4b8211042470e9e92e3b7fb (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 288f9970670841044ab030104fa6b6ed159949d0 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < 0370da114a9bc044e248b85c6809d1b5e0c1f7f9 (git) Affected: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba , < f66bdb1cc0fcd227a062378f8be0b5873aa5600a (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6493165034bca14033bf49c9cec7b45e97a91497",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "b4452349dcf4d561e13be768d5d278de58248930",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "363c4252ffc473a0203e91b83ede5519dfb8bd07",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "6ec22afc82a3cae07ade0a6ec361ae2532128ff5",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "15aa81b390d401abf4b8211042470e9e92e3b7fb",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "288f9970670841044ab030104fa6b6ed159949d0",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "0370da114a9bc044e248b85c6809d1b5e0c1f7f9",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            },
            {
              "lessThan": "f66bdb1cc0fcd227a062378f8be0b5873aa5600a",
              "status": "affected",
              "version": "25121173f7b1e4ac3fc692df6e7b8c52ec36abba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: don\u0027t 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The buggy state is a locally originated MSG_ZEROCOPY/io_uring TX skb (SKBFL_DONT_ORPHAN plus a uarg); NIC-received packets never carry that marker, and the skb must still be forwarded into local ESP, so a local account is required.\nAC:L - The attacker fully controls both sides: OVS flows with a non-last RECIRC, a guaranteed miss/upcall failure on the clone, MSG_ZEROCOPY send, and the ESP SA/payload, so the shared-shinfo strip and in-place decrypt are reliably reproducible with no race beyond attacker influence.\nPR:L - An unprivileged user can enable SO_ZEROCOPY and, via unshare -Urn, obtain CAP_NET_ADMIN in a user+net namespace; OVS genetlink uses GENL_UNS_ADMIN_PERM and XFRM SAs are likewise namespace-installable, while the global page cache remains the corruption target.\nUI:N - The attacker installs the OVS recirc flow, sends the MSG_ZEROCOPY packet, and completes local ESP delivery without any victim action.\nS:U - The resulting page-cache write and premature zerocopy completion stay inside the host kernel\u0027s memory authority as a standard local memory-corruption/LPE primitive and do not cross a VM or IOMMU boundary.\nC:H - skb_tx_error() on the clone completes the shared uarg and clears SKBFL_SHARED_FRAG, so later in-place ESP decrypt (and UAF of still-mapped pages) corrupts globally cached file/code pages and can be leveraged for arbitrary disclosure.\nI:H - With the shared-frag marker stripped, esp_input() skips skb_cow_data() and AEAD-decrypts attacker-controlled plaintext in place over page-cache-backed frags, yielding an unprivileged write into files the sender could only read (the Fragnesia primitive).\nA:H - Use-after-free of zerocopy pages still referenced by the in-flight original skb, plus overwriting page-cache-backed executable or kernel-managed data, causes oopses, panics, and process crashes."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T11:59:22.460Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6493165034bca14033bf49c9cec7b45e97a91497"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4452349dcf4d561e13be768d5d278de58248930"
        },
        {
          "url": "https://git.kernel.org/stable/c/363c4252ffc473a0203e91b83ede5519dfb8bd07"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ec22afc82a3cae07ade0a6ec361ae2532128ff5"
        },
        {
          "url": "https://git.kernel.org/stable/c/15aa81b390d401abf4b8211042470e9e92e3b7fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/288f9970670841044ab030104fa6b6ed159949d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/0370da114a9bc044e248b85c6809d1b5e0c1f7f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/f66bdb1cc0fcd227a062378f8be0b5873aa5600a"
        }
      ],
      "title": "net: skbuff: don\u0027t touch shared zerocopy state in skb_tx_error()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80977",
    "datePublished": "2026-09-11T19:42:38.862Z",
    "dateReserved": "2026-08-26T14:34:25.811Z",
    "dateUpdated": "2026-09-14T11:59:22.460Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.