CVE-2026-63868

🗓️ 19 Jul 2026 14:18:37Reported by LinuxType

Linux kernel fix for garp_pdu_parse_attr unsigned underflow by computing data length as attribute length minus header length.

Reporter	Title	Published	Views	Family All 7
Circl	CVE-2026-63868	19 Jul 202616:04	–	circl
Cvelist	CVE-2026-63868 net: garp: fix unsigned integer underflow in garp_pdu_parse_attr	19 Jul 202614:18	–	cvelist
EUVD	EUVD-2026-45553	19 Jul 202614:18	–	euvd
NVD	CVE-2026-63868	19 Jul 202615:16	–	nvd
OSV	CVE-2026-63868 net: garp: fix unsigned integer underflow in garp_pdu_parse_attr	19 Jul 202614:18	–	osv
OSV	DEBIAN-CVE-2026-63868	19 Jul 202615:48	–	osv
Positive Technologies	PT-2026-61185	19 Jul 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange2.6.27–5.10.259

linux linux_kernelRange5.11.0–5.15.210

linux linux_kernelRange5.16.0–6.1.176

linux linux_kernelRange6.2.0–6.6.143

linux linux_kernelRange6.7.0–6.12.94

linux linux_kernelRange6.13.0–6.18.36

linux linux_kernelRange6.19.0–7.0.13

linux linux_kernelRange7.1.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/802/garp.c"
    ],
    "versions": [
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "29f28172afb2ae7b31e9bf3e978396f20b381688",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "973cf7c433d27f4d9556d0b7c332543be7ed7a6e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "d8dcd14aa886b8effd83022c550669f4f262854b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "74e02121be1dcc0efcd56ebdf0171d6129105659",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "d4c86ea09ae3e63ee5aa86e941fcc38e0e39874a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "04e22fefac1af3e32f245e9045382348773b5d59",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "a11f1a671b1361f0f1278dc0041374f2730df73f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eca9ebac651f774d8b10fce7c5d173c3c3d3394f",
        "lessThan": "16e408e607a94b646fb14a2a98422c6877ae4b3c",
        "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/802/garp.c"
    ],
    "versions": [
      {
        "version": "2.6.27",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.27",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.259",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.94",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.36",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.13",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/04e22fefac1af3e32f245e9045382348773b5d59
git	www.git.kernel.org/stable/c/d8dcd14aa886b8effd83022c550669f4f262854b
git	www.git.kernel.org/stable/c/29f28172afb2ae7b31e9bf3e978396f20b381688
git	www.git.kernel.org/stable/c/74e02121be1dcc0efcd56ebdf0171d6129105659
git	www.git.kernel.org/stable/c/16e408e607a94b646fb14a2a98422c6877ae4b3c
git	www.git.kernel.org/stable/c/a11f1a671b1361f0f1278dc0041374f2730df73f
git	www.git.kernel.org/stable/c/973cf7c433d27f4d9556d0b7c332543be7ed7a6e
git	www.git.kernel.org/stable/c/d4c86ea09ae3e63ee5aa86e941fcc38e0e39874a

19 Jul 2026 15:16Current

5.4Medium risk

Vulners AI Score5.4