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CVE-2026-45840 openvswitch: cap upcall PID array size and pre-size vport replies

🗓️ 27 May 2026 09:24:39Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

CVE-2026-45840: Open vSwitch caps upcall PID array and pre-sizes vport replies to nr_cpu_ids.

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",
      "net/openvswitch/vport.c"
    ],
    "versions": [
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "8d59b80e69dddb665eb2de36e62859ab2073470e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "d9e47e29aacb9f8a9d59feb6ab5b128a9bbb40b0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "b39f763d720d623218bc1d95ace6855d7b474e81",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "f9ef3db77a383d66847fd082c2b437d8ae4d9c63",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "f99ac36b5d7c719d08a69fcdecce40f78a874e15",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "fa6e90bc443bed8dc0d55bc5ea5b27ffdfe37704",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "1d6c02b86329883aa467a3a61f8d34369db73a2f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5cd667b0a4567048bb555927d6ee564f4e5620a9",
        "lessThan": "2091c6aa0df6aba47deb5c8ab232b1cb60af3519",
        "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",
      "net/openvswitch/vport.c"
    ],
    "versions": [
      {
        "version": "3.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.258",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.209",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.141",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.91",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.33",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.10",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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