CVE-2026-99999

🗓️ 15 Oct 2026 12:19:22Reported by LinuxType

cve🔗 web.nvd.nist.gov📰️ 3 Media mentions👁 202 Views

Checksum validation flaw in the Linux kernel ipv4 stack allows network header corruption.

Reporter	Title	Published	Views	Family All 11
Circl	CVE-2026-99999	21 May 202612:44	–	circl
Cvelist	CVE-2026-99999 ipv4: validate checksum_start before completing checksum	15 Oct 202612:19	–	cvelist
Debian CVE	CVE-2026-99999	15 Oct 202612:19	–	debiancve
EUVD	EUVD-2026-102044	15 Oct 202612:19	–	euvd
NVD	CVE-2026-99999	15 Oct 202613:17	–	nvd
osv-debian	DEBIAN-CVE-2026-99999	15 Oct 202613:17	–	osv-debian
Positive Technologies	PT-2026-26264	19 Mar 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-99999	16 Oct 202605:44	–	redhatcve
The Hacker News	Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory	15 Oct 202620:24	–	thn
UbuntuCve	CVE-2026-99999	15 Oct 202600:00	–	ubuntucve

Vulners

CNA

Node

linux linux_kernelRange2.6.27–5.10.272

linux linux_kernelRange5.11.0–5.15.223

linux linux_kernelRange5.16.0–6.1.190

linux linux_kernelRange6.2.0–6.6.159

linux linux_kernelRange6.7.0–6.12.113

linux linux_kernelRange6.13.0–6.18.57

linux linux_kernelRange6.19.0–7.2.11

linux linux_kernelRange7.3.0–7.3-rc7

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/ip.h",
      "net/bridge/netfilter/nf_conntrack_bridge.c",
      "net/ipv4/ip_output.c",
      "net/netfilter/nfnetlink_queue.c",
      "net/netfilter/xt_CHECKSUM.c",
      "net/xfrm/xfrm_output.c"
    ],
    "versions": [
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "a464d950f31c89565cbaae038cc60db04fe01956",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "0fab003ef4698e0628060a45a48f14b43ba2a40a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "94524b7b32691de2e2ce162c04d6cbc9106e5cbf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "a65f69e0f38ffbed1b128029e09097436416dc8b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "32a8b0adaa18e52aaa0b246b5ffe683075354dbb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "f3e835af6226f1dd12160cbd696081e9b6155de0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "c3e33464746166264334641dc850a36eef7e6326",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f43798c27684ab925adde7d8acc34c78c6e50df8",
        "lessThan": "6785011f8b16abf40b1e9d8b2e332232b3e68822",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/ip.h",
      "net/bridge/netfilter/nf_conntrack_bridge.c",
      "net/ipv4/ip_output.c",
      "net/netfilter/nfnetlink_queue.c",
      "net/netfilter/xt_CHECKSUM.c",
      "net/xfrm/xfrm_output.c"
    ],
    "versions": [
      {
        "version": "2.6.27",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.27",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.272",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.223",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.190",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.159",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.113",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.57",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.11",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc7",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/a464d950f31c89565cbaae038cc60db04fe01956
git	www.git.kernel.org/stable/c/32a8b0adaa18e52aaa0b246b5ffe683075354dbb
vercel	www.vercel.com/blog/findings-from-the-1-million-dollar-vercel-sandbox-challenge
pwn	www.pwn.ai/blog/Pwnescape
git	www.git.kernel.org/stable/c/a65f69e0f38ffbed1b128029e09097436416dc8b
git	www.git.kernel.org/stable/c/0fab003ef4698e0628060a45a48f14b43ba2a40a
git	www.git.kernel.org/stable/c/94524b7b32691de2e2ce162c04d6cbc9106e5cbf
git	www.git.kernel.org/stable/c/f3e835af6226f1dd12160cbd696081e9b6155de0
git	www.git.kernel.org/stable/c/6785011f8b16abf40b1e9d8b2e332232b3e68822
git	www.git.kernel.org/stable/c/c3e33464746166264334641dc850a36eef7e6326

15 Oct 2026 23:19Current

6.1Medium risk

Vulners AI Score6.1

CVSS 3.19.3