CVE-2026-64422

🗓️ 25 Jul 2026 08:51:00Reported by LinuxType

CVE-2026-64422: The Linux kernel fixes bound TCP reordering sysctl writes and MTU probe size overflow.

Reporter	Title	Published	Views	Family All 9
Cvelist	CVE-2026-64422 net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes	25 Jul 202608:51	–	cvelist
Debian CVE	CVE-2026-64422	25 Jul 202608:51	–	debiancve
EUVD	EUVD-2026-48966	25 Jul 202608:51	–	euvd
NVD	CVE-2026-64422	25 Jul 202610:17	–	nvd
OSV	DEBIAN-CVE-2026-64422	25 Jul 202616:48	–	osv
OSV	ECHO-8163-A595-7D73	26 Jul 202602:26	–	osv
Positive Technologies	PT-2026-64643	25 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-64422	25 Jul 202615:59	–	susecve
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-64422	25 Jul 202600:00	–	nessus

Vulners

CNA

Node

linux linux_kernelRange2.6.24–5.10.261

linux linux_kernelRange5.11.0–5.15.212

linux linux_kernelRange5.16.0–6.1.178

linux linux_kernelRange6.2.0–6.6.145

linux linux_kernelRange6.7.0–6.12.96

linux linux_kernelRange6.13.0–6.18.39

linux linux_kernelRange6.19.0–7.1.4

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv4/sysctl_net_ipv4.c",
      "net/ipv4/tcp_output.c"
    ],
    "versions": [
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "f0d88a4cd03affff6c08adf6c63964e235aede43",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "27ddf4486c7dbf5bdd393fa8bef6b67179796d98",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "e81f805824a8109504fce090641b17d135b48cd1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "99206ce2244f8a3ed64298d0667c9055845a5dc7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "bbae351c0f32f7c200249e4aa6561b2b419dcf69",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "a094ac95d3b69adfa1676eb9c8eae6835d4f1671",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "91cc17c0e5e5ada156a8d5787a2509d263ea6bbf",
        "lessThan": "efb8763d7bbb40cff4cc55a6b62c3095a038149c",
        "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/ipv4/sysctl_net_ipv4.c",
      "net/ipv4/tcp_output.c"
    ],
    "versions": [
      {
        "version": "2.6.24",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.24",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.96",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/f0d88a4cd03affff6c08adf6c63964e235aede43
git	www.git.kernel.org/stable/c/27ddf4486c7dbf5bdd393fa8bef6b67179796d98
git	www.git.kernel.org/stable/c/efb8763d7bbb40cff4cc55a6b62c3095a038149c
git	www.git.kernel.org/stable/c/782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae
git	www.git.kernel.org/stable/c/e81f805824a8109504fce090641b17d135b48cd1
git	www.git.kernel.org/stable/c/bbae351c0f32f7c200249e4aa6561b2b419dcf69
git	www.git.kernel.org/stable/c/a094ac95d3b69adfa1676eb9c8eae6835d4f1671
git	www.git.kernel.org/stable/c/99206ce2244f8a3ed64298d0667c9055845a5dc7

25 Jul 2026 10:17Current

5.8Medium risk

Vulners AI Score5.8

EPSS0.00231