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CVE-2026-23247

🗓️ 18 Mar 2026 10:05:09Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 37 Views

Linux kernel fix restores ports in timestamp offset for secure_seq to mitigate SYN cookie leakage.

Related
Detection
Affected
Refs
NVD
Vulners
CNA
Node
linuxlinux_kernelRange4.116.18.17
OR
linuxlinux_kernelRange6.196.19.7
OR
linuxlinux_kernelMatch4.10.14
OROR
linuxlinux_kernelMatch4.11rc6
OR
linuxlinux_kernelMatch4.11rc7
OR
linuxlinux_kernelMatch4.11rc8
OROR
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/secure_seq.h",
      "include/net/tcp.h",
      "net/core/secure_seq.c",
      "net/ipv4/syncookies.c",
      "net/ipv4/tcp_input.c",
      "net/ipv4/tcp_ipv4.c",
      "net/ipv6/syncookies.c",
      "net/ipv6/tcp_ipv6.c"
    ],
    "versions": [
      {
        "version": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
        "lessThan": "5da5662181ef8a251e3ba564903002c2e87de452",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
        "lessThan": "eae2f14ab2efccdb7480fae7d42c4b0116ef8805",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
        "lessThan": "46e5b0d7cf55821527adea471ffe52a5afbd9caf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
        "lessThan": "165573e41f2f66ef98940cf65f838b2cb575d9d1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "443fac9f2618b93cbc5ab068dc594530236b3a23",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4.10.14",
        "lessThan": "4.11",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/secure_seq.h",
      "include/net/tcp.h",
      "net/core/secure_seq.c",
      "net/ipv4/syncookies.c",
      "net/ipv4/tcp_input.c",
      "net/ipv4/tcp_ipv4.c",
      "net/ipv6/syncookies.c",
      "net/ipv6/tcp_ipv6.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.94",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.17",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.7",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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19 Jun 2026 13:16Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.15.5
EPSS0.00118
37