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CVE-2026-64422 net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes

🗓️ 25 Jul 2026 08:51:00Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 13 Views

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes Reject invalid net.ipv4.tcp_reordering values before they reach TCPsocket state. The sysctl is stored as an int b...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-64422
25 Jul 202608:51
cve
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
CVE-2026-64422 net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes
25 Jul 202608:51
osv
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
Rows per page
[
  {
    "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"
      }
    ]
  }
]

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25 Jul 2026 08:51Current
EPSS0.00231
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