CVE-2026-68431

🗓️ 12 Aug 2026 00:07:17Reported by LinuxType

ksmbd out-of-bounds read in init_smb2_rsp_hdr exposes kernel data to unauthenticated clients.

Reporter	Title	Published	Views	Family All 16
ATTACKERKB	CVE-2026-68431	12 Aug 202600:07	–	attackerkb
Circl	CVE-2026-68431	13 Aug 202623:30	–	circl
Cvelist	CVE-2026-68431 ksmbd: validate minimum PDU size for transform requests	12 Aug 202600:07	–	cvelist
Debian	[SECURITY] [DSA 6466-1] linux security update	25 Aug 202620:09	–	debian
Debian CVE	CVE-2026-68431	12 Aug 202600:07	–	debiancve
Tenable Nessus	Debian dsa-6466 : ata-modules-6.12.101+deb13-armmp-di - security update	25 Aug 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-68431	12 Aug 202600:00	–	nessus
EUVD	EUVD-2026-57039	12 Aug 202600:07	–	euvd
NVD	CVE-2026-68431	12 Aug 202600:17	–	nvd
OSV	BELL-CVE-2026-68431	14 Aug 202606:04	–	osv

Vulners

CNA

Node

linux linux_kernelRange5.15.145–5.15.217

linux linux_kernelRange6.1.34–6.1.184

linux linux_kernelRange6.3.8–6.4

linux linux_kernelRange6.4–5.15.217

linux linux_kernelRange5.16.0–6.1.184

linux linux_kernelRange6.2.0–6.6.153

linux linux_kernelRange6.7.0–6.12.105

linux linux_kernelRange6.13.0–6.18.46

linux linux_kernelRange6.19.0–7.1.6

linux linux_kernelRange7.2.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/connection.c"
    ],
    "versions": [
      {
        "version": "df3a4518aee64f21bcafa891105b468413f27431",
        "lessThan": "22f1aa35b87e471cc31b35b74451f46630863b12",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "543c12c2644e772caa6880662c2a852cfdc5a10c",
        "lessThan": "928dda88d0e13fbca381255028f65b244343a4ea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "368ba06881c395f1c9a7ba22203cf8d78b4addc0",
        "lessThan": "d8e5c5672724b8f3c4c099d2cf60239c996e5424",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "368ba06881c395f1c9a7ba22203cf8d78b4addc0",
        "lessThan": "32e486b70c256d5ef4baa5a2936ade2fea50e8eb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "368ba06881c395f1c9a7ba22203cf8d78b4addc0",
        "lessThan": "d9e9753dfd43bd27c956578df7804a3c90b80fdc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "368ba06881c395f1c9a7ba22203cf8d78b4addc0",
        "lessThan": "b62c510f59803f82f9b4c76ead2a56833b2984c7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "368ba06881c395f1c9a7ba22203cf8d78b4addc0",
        "lessThan": "cfc0b8e5080aec87700774e8568765eaa4b7b92b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e9cb7be2fcbaee9e808b729e92948d38d52e5add",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.15.145",
        "lessThan": "5.15.217",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.1.34",
        "lessThan": "6.1.184",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.3.8",
        "lessThan": "6.4",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/connection.c"
    ],
    "versions": [
      {
        "version": "6.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.4",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.217",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.184",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.153",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.105",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.46",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.6",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/928dda88d0e13fbca381255028f65b244343a4ea
git	www.git.kernel.org/stable/c/22f1aa35b87e471cc31b35b74451f46630863b12
git	www.git.kernel.org/stable/c/d8e5c5672724b8f3c4c099d2cf60239c996e5424
git	www.git.kernel.org/stable/c/b62c510f59803f82f9b4c76ead2a56833b2984c7
git	www.git.kernel.org/stable/c/d9e9753dfd43bd27c956578df7804a3c90b80fdc
git	www.git.kernel.org/stable/c/cfc0b8e5080aec87700774e8568765eaa4b7b92b
git	www.git.kernel.org/stable/c/32e486b70c256d5ef4baa5a2936ade2fea50e8eb

23 Aug 2026 13:16Current

5.4Medium risk

Vulners AI Score5.4

CVSS 3.19.1

EPSS0.00366