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CVE-2026-80585

🗓️ 26 Aug 2026 14:37:40Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 34 Views

Linux kernel mptcp fastopen marks data-less TFO SYNs as MPTFO causing stale state and confusion.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-80585
27 Aug 202608:40
circl
cvelist
Cvelist
CVE-2026-80585 mptcp: fastopen: only mark MPTFO subflows with SYN data
26 Aug 202614:37
cvelist
debiancve
Debian CVE
CVE-2026-80585
26 Aug 202614:37
debiancve
euvd
EUVD
EUVD-2026-66500
27 Aug 202606:31
euvd
nvd
NVD
CVE-2026-80585
26 Aug 202615:17
nvd
osv
OSV
AZL-97842 CVE-2026-80585 affecting package kernel 6.6.150.1-1
26 Aug 202615:17
osv
osv
OSV
BELL-CVE-2026-80585
29 Aug 202606:04
osv
osv
OSV
DEBIAN-CVE-2026-80585
26 Aug 202615:17
osv
osv
OSV
UBUNTU-CVE-2026-80585
26 Aug 202615:17
osv
ptsecurity
Positive Technologies
PT-2026-82201
26 Aug 202600:00
ptsecurity
Rows per page
Vulners
CNA
Node
OR
linuxlinux_kernelRange6.26.6.153
linuxlinux_kernelRange6.7.06.12.105
linuxlinux_kernelRange6.13.06.18.46
linuxlinux_kernelRange6.19.07.1.10
linuxlinux_kernelRange7.2.0
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/mptcp/fastopen.c"
    ],
    "versions": [
      {
        "version": "36b122baf6a8bd46b4a591f12f4ed17b22257408",
        "lessThan": "f75f174edc865738522e514d042cf5627f084859",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "36b122baf6a8bd46b4a591f12f4ed17b22257408",
        "lessThan": "fca7e444c04689fe4cc6b56f2725f804a4bb1ef9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "36b122baf6a8bd46b4a591f12f4ed17b22257408",
        "lessThan": "75e564b2ced1cc3d9a8904c7d2d2bb448fffb8b5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "36b122baf6a8bd46b4a591f12f4ed17b22257408",
        "lessThan": "72b4a0c51a4b550d40301d60a366b429b8c8e78d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "36b122baf6a8bd46b4a591f12f4ed17b22257408",
        "lessThan": "e00b63056fb4f261455b3e5df5268a1f8ce47a87",
        "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/mptcp/fastopen.c"
    ],
    "versions": [
      {
        "version": "6.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.153",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.105",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.46",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.10",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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27 Aug 2026 06:17Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.19.4
EPSS0.00317
34