CVE-2026-45840

🗓️ 27 May 2026 09:24:39Reported by LinuxType

Open vSwitch upcall PID array overflow fixed; cap at nr_cpu_ids and pre-size replies.

Reporter	Title	Published	Views	Family All 44
ATTACKERKB	CVE-2026-45840	27 May 202609:24	–	attackerkb
Circl	CVE-2026-45840	27 May 202613:37	–	circl
CNNVD	Linux kernel 安全漏洞	27 May 202600:00	–	cnnvd
Cvelist	CVE-2026-45840 openvswitch: cap upcall PID array size and pre-size vport replies	27 May 202609:24	–	cvelist
Debian CVE	CVE-2026-45840	27 May 202609:24	–	debiancve
EUVD	EUVD-2026-32166	27 May 202609:24	–	euvd
Microsoft CVE	openvswitch: cap upcall PID array size and pre-size vport replies	28 May 202608:04	–	mscve
NVD	CVE-2026-45840	27 May 202611:16	–	nvd
OPENSUSE Linux	kernel-devel-7.0.11-1.1 on GA media (moderate)	8 Jun 202600:00	–	opensuse
OSV	BELL-CVE-2026-45840	28 May 202606:10	–	osv

Vulners

CNA

Node

linux linux_kernelRange3.17–5.10.258

linux linux_kernelRange5.11.0–5.15.209

linux linux_kernelRange5.16.0–6.1.175

linux linux_kernelRange6.2.0–6.6.141

linux linux_kernelRange6.7.0–6.12.91

linux linux_kernelRange6.13.0–6.18.33

linux linux_kernelRange6.19.0–7.0.10

linux linux_kernelRange7.1.0≥

[
  {
    "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"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/8d59b80e69dddb665eb2de36e62859ab2073470e
git	www.git.kernel.org/stable/c/f9ef3db77a383d66847fd082c2b437d8ae4d9c63
git	www.git.kernel.org/stable/c/fa6e90bc443bed8dc0d55bc5ea5b27ffdfe37704
git	www.git.kernel.org/stable/c/b39f763d720d623218bc1d95ace6855d7b474e81
git	www.git.kernel.org/stable/c/2091c6aa0df6aba47deb5c8ab232b1cb60af3519
git	www.git.kernel.org/stable/c/d9e47e29aacb9f8a9d59feb6ab5b128a9bbb40b0
git	www.git.kernel.org/stable/c/f99ac36b5d7c719d08a69fcdecce40f78a874e15
git	www.git.kernel.org/stable/c/1d6c02b86329883aa467a3a61f8d34369db73a2f

17 Jun 2026 10:52Current

5.9Medium risk

Vulners AI Score5.9

EPSS0.0018