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CVE-2026-80738

🗓️ 03 Sep 2026 08:21:53Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 72 Views

Linux kernel bpf_tcp_*_syncookie dereferences fullsock fields on mini-sockets without state check.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cnnvd
CNNVD
Linux Kernel Security Vulnerabilities
2 Sep 202616:00
–cnnvd
cvelist
Cvelist
CVE-2026-80738 bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie
3 Sep 202608:21
–cvelist
debian
Debian
[SECURITY] [DSA 6602-1] linux security update
2 Nov 202616:13
–debian
debiancve
Debian CVE
CVE-2026-80738
3 Sep 202608:21
–debiancve
euvd
EUVD
EUVD-2026-70342
3 Sep 202608:21
–euvd
mscve
Microsoft CVE
bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie
4 Sep 202608:06
–mscve
nvd
NVD
CVE-2026-80738
3 Sep 202613:06
–nvd
osv_azl
osv_azl
AZL-99072 CVE-2026-80738 affecting package kernel 6.6.159.1-1
3 Sep 202613:06
–osv_azl
osv_bell
osv_bell
BELL-CVE-2026-80738
8 Sep 202606:05
–osv_bell
osv_clsa
osv_clsa
CLSA-2026-1791132991 Fix of 400 CVEs
19 Oct 202613:48
–osv_clsa
Rows per page
Vulners
CNA
Node
OR
linuxlinux_kernelRange5.2–6.1.191
linuxlinux_kernelRange6.2.0–6.6.160
linuxlinux_kernelRange6.7.0–6.12.114
linuxlinux_kernelRange6.13.0–6.18.57
linuxlinux_kernelRange6.19.0–7.1.9
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/core/filter.c"
    ],
    "versions": [
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "b75f1c071f31be7f4b950721e04240c250091ad4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "5702e4c259809c760912c477c4ae34e9217bb4d9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "b5525e853a2a08a9559adb84b0616025958dc542",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "22c2169770ad3b3595690e51caac875178cf496d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "23f682083aa3fbc0c49667818efd6979a8bc5ac2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "399040847084a69f345e0a52fd62f04654e0fce3",
        "lessThan": "31a420a822ff92e2090bd5d65efe8e34e2d6d9b8",
        "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/core/filter.c"
    ],
    "versions": [
      {
        "version": "5.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.160",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.114",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.57",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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30 Oct 2026 13:20Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.3
EPSS0.00171
72