CVE-2026-80844

🗓️ 04 Sep 2026 15:54:54Reported by LinuxType

Linux kernel xfrm AH6 missing routing header segments_left validation causes out-of-bounds access.

Reporter	Title	Published	Views	Family All 5
Cvelist	CVE-2026-80844 xfrm: ah6: validate routing header segments_left	4 Sep 202615:54	–	cvelist
EUVD	EUVD-2026-71294	4 Sep 202615:54	–	euvd
NVD	CVE-2026-80844	4 Sep 202616:18	–	nvd
OSV	DEBIAN-CVE-2026-80844	4 Sep 202616:18	–	osv
Positive Technologies	PT-2026-85722	4 Sep 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange2.6.12–5.10.269

linux linux_kernelRange5.11.0–5.15.220

linux linux_kernelRange5.16.0–6.1.187

linux linux_kernelRange6.2.0–6.6.156

linux linux_kernelRange6.7.0–6.12.108

linux linux_kernelRange6.13.0–6.18.49

linux linux_kernelRange6.19.0–7.1.13

linux linux_kernelRange7.2.0–7.2.3

linux linux_kernelRange7.3.0–7.3-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/ah6.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "2dc650956e4e163b879b3fb1027f9557abc5c985",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "48b0e36cf54358276ee7aa897034c973097d2bc9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "1b7e066eabcc7d6d8f476c34739b45932f2f4c31",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "f00df8500e5a36ba70d336fd34bd2152ea074e5f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "1516e31ac458a738be485620579d8f7fb2700fcb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "6733ae71268a27d598cfb3f3339a3c950b9b656d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "0bf11081ad3753938a2b48723ce6298dbac743a1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "46640c814f25f096b0b0045ca50e1b7030cd8a30",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "7bad4bda74dc4713f398d3b7624ff05478e3a568",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/ah6.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.269",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.220",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.187",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.156",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.108",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.49",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.13",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.3",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/0bf11081ad3753938a2b48723ce6298dbac743a1
git	www.git.kernel.org/stable/c/6733ae71268a27d598cfb3f3339a3c950b9b656d
git	www.git.kernel.org/stable/c/1516e31ac458a738be485620579d8f7fb2700fcb
git	www.git.kernel.org/stable/c/2dc650956e4e163b879b3fb1027f9557abc5c985
git	www.git.kernel.org/stable/c/46640c814f25f096b0b0045ca50e1b7030cd8a30
git	www.git.kernel.org/stable/c/f00df8500e5a36ba70d336fd34bd2152ea074e5f
git	www.git.kernel.org/stable/c/48b0e36cf54358276ee7aa897034c973097d2bc9
git	www.git.kernel.org/stable/c/7bad4bda74dc4713f398d3b7624ff05478e3a568
git	www.git.kernel.org/stable/c/1b7e066eabcc7d6d8f476c34739b45932f2f4c31

04 Sep 2026 16:18Current