Skip to content
Heist/ feed
Back to feed
UnratedFix available

bpf: Disable xfrm_decode_session hook attachment

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable xfrm_decode_session hook attachment BPF LSM programs can currently attach to xfrm_decode_session(). That hook may return an error, but security_skb_classify_flow() calls it from a void path and triggers BUG_ON() if an error is returned. Disable BPF attachment to the hook to prevent a BPF LSM program from turning packet classification into a full panic.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
CVEs
CVE-2026-80669
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 10:03 UTC · Revision 1

Source evidence

bpf: Disable xfrm_decode_session hook attachment

core-osv · Original source

Published 28 Aug 2026, 06:49 UTC

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable xfrm_decode_session hook attachment BPF LSM programs can currently attach to xfrm_decode_session(). That hook may return an error, but security_skb_classify_flow() calls it from a void path and triggers BUG_ON() if an error is returned. Disable BPF attachment to the hook to prevent a BPF LSM program from turning packet classification into a full panic.

osv:CVE-2026-80669

Kernel

Fixed versions: 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5

Complete source record
{
  "id": "91e0dc288a1afa7fbfff14981295cd9b475a5839c2b1cf787ba6e5e5c2ce2591",
  "url": "https://osv.dev/vulnerability/CVE-2026-80669",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpf: Disable xfrm_decode_session hook attachment",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bpf: Disable xfrm_decode_session hook attachment BPF LSM programs can currently attach to xfrm_decode_session(). That hook may return an error, but security_skb_classify_flow() calls it from a void path and triggers BUG_ON() if an error is returned. Disable BPF attachment to the hook to prevent a BPF LSM program from turning packet classification into a full panic.",
    "evidence": "osv:CVE-2026-80669",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.178",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.145",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.97",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.40",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-80669",
      "aliases": [
        "CVE-2026-80669"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9e4e01dfd3254c7f04f24b7c6b29596bc12332f3"
                },
                {
                  "fixed": "aa265d47308775c5501073b08133623bcb5421f9"
                },
                {
                  "fixed": "6b44c6660aa1c9b843e450a623ac4a8484919dce"
                },
                {
                  "fixed": "4ae780d173ef40d4f7cb76935dc2d55fbf380009"
                },
                {
                  "fixed": "49fa1be621dde8f526d36e5791aded8fafda1e9c"
                },
                {
                  "fixed": "1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9"
                },
                {
                  "fixed": "12091470c6b4c1c14b2de12dcbae2ada6cb6d20b"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80669.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.7.0"
                },
                {
                  "fixed": "6.1.178"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.145"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.97"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.40"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80669.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.608052264Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/12091470c6b4c1c14b2de12dcbae2ada6cb6d20b",
        "https://git.kernel.org/stable/c/1bb3b6a5c3c5cc814eae4ff0212fdced36f8bce9",
        "https://git.kernel.org/stable/c/49fa1be621dde8f526d36e5791aded8fafda1e9c",
        "https://git.kernel.org/stable/c/4ae780d173ef40d4f7cb76935dc2d55fbf380009",
        "https://git.kernel.org/stable/c/6b44c6660aa1c9b843e450a623ac4a8484919dce",
        "https://git.kernel.org/stable/c/aa265d47308775c5501073b08133623bcb5421f9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80669.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80669",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80669.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80669",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 511567,
  "published_at": "2026-08-28T06:49:10.511+00:00"
}