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CVE-2026-74664 net: openvswitch: reallocate update replies for mismatched IDs

🗓️ 22 Aug 2026 15:32:36Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Linux kernel OVS BUG_ON crash when short UFID reply overflows preallocated skb during flow update.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/openvswitch/datapath.c"
    ],
    "versions": [
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "bd8ca84d48cd9a4f6fc63df26512c55e1d339927",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "00f987f066e802793a37dd2167459e67cf2cf2ec",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "696a0b9435fce9cf4f1e9ba7f6afa6bee96c97fc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "87d0c0040b5d4b61de51ae39132c4c46709f2f77",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "69f40ccf85074981340847d650a9cbf9adabfbbe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "23716dd9d8d46a5908536b73dc085e62f2b5c237",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "20751193d83be2e9735d4faee71375691c09cd13",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "74ed7ab9264c54471c7f057409d352052820d750",
        "lessThan": "5d1c224dd914579524a183a514c12b95095d12ce",
        "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/openvswitch/datapath.c"
    ],
    "versions": [
      {
        "version": "4.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "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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