CVE-2026-45865 mctp i2c: initialise event handler read bytes

🗓️ 27 May 2026 12:15:45Reported by LinuxType

Linux kernel fix for mctp over interconnect reads returning uninitialized bytes by forcing zeroxff on reads.

Reporter	Title	Published	Views	Family All 13
CNNVD	Linux kernel 安全漏洞	27 May 202600:00	–	cnnvd
CVE	CVE-2026-45865	27 May 202612:15	–	cve
Debian CVE	CVE-2026-45865	27 May 202612:15	–	debiancve
EUVD	EUVD-2026-32331	27 May 202615:33	–	euvd
NVD	CVE-2026-45865	27 May 202614:16	–	nvd
OSV	BELL-CVE-2026-45865	29 May 202606:10	–	osv
OSV	DEBIAN-CVE-2026-45865	27 May 202614:16	–	osv
OSV	UBUNTU-CVE-2026-45865	27 May 202614:16	–	osv
Positive Technologies	PT-2026-43732	27 May 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-45865	28 May 202604:02	–	redhatcve

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/mctp/mctp-i2c.c"
    ],
    "versions": [
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "93e01e837e105299f1c259ef71f6e1ec4fe806e3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "11f83253244060b5de5eac787f61ae3f3e559d01",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "fa9861e5c8af7651dddfa8d490aaada17ae33b6c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "6ff2ebfef75fbc57d937d8fbe738b967edf2d331",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "1eeedb310229bfee9dd4d992e5bba33fe1378a8f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b8abf9fc3dacd7529d363e26fe8230935d65f8",
        "lessThan": "2a14e91b6d76639dac70ea170f4384c1ee3cb48d",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/mctp/mctp-i2c.c"
    ],
    "versions": [
      {
        "version": "5.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.165",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.128",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.75",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.14",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.4",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/11f83253244060b5de5eac787f61ae3f3e559d01
git	www.git.kernel.org/stable/c/1eeedb310229bfee9dd4d992e5bba33fe1378a8f
git	www.git.kernel.org/stable/c/fa9861e5c8af7651dddfa8d490aaada17ae33b6c
git	www.git.kernel.org/stable/c/6ff2ebfef75fbc57d937d8fbe738b967edf2d331
git	www.git.kernel.org/stable/c/2a14e91b6d76639dac70ea170f4384c1ee3cb48d
git	www.git.kernel.org/stable/c/93e01e837e105299f1c259ef71f6e1ec4fe806e3

27 May 2026 12:15Current

EPSS0.00043