CVE-2026-46027 net/smc: avoid early lgr access in smc_clc_wait_msg

🗓️ 27 May 2026 12:56:35Reported by LinuxType

Fixed net/smc: avoid updating link-group state in smc_clc_wait_msg before handshake completes.

Reporter	Title	Published	Views	Family All 30
ATTACKERKB	CVE-2026-46027	27 May 202612:56	–	attackerkb
CNNVD	Linux kernel 安全漏洞	27 May 202600:00	–	cnnvd
CVE	CVE-2026-46027	27 May 202612:56	–	cve
Debian CVE	CVE-2026-46027	27 May 202612:56	–	debiancve
EUVD	EUVD-2026-32408	27 May 202612:56	–	euvd
Microsoft CVE	net/smc: avoid early lgr access in smc_clc_wait_msg	28 May 202608:04	–	mscve
NVD	CVE-2026-46027	27 May 202614:17	–	nvd
OPENSUSE Linux	kernel-devel-7.0.11-1.1 on GA media (moderate)	8 Jun 202600:00	–	opensuse
OSV	BELL-CVE-2026-46027	28 May 202606:10	–	osv
OSV	DEBIAN-CVE-2026-46027	27 May 202614:17	–	osv

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/smc_clc.c"
    ],
    "versions": [
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "257cdf0c5ced9c0fba8aba501d94b0a5fcef2086",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "22546729b96fc873b23065dc49e3d73c45cfb874",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "5eedbfd82c2884e0010fdfb3c9446a6ebcadb691",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "f0858e1d5624bb120b198f2a8528f97a9b0ae069",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "6180a296ca65b08a81914805cbc0f78da5f10a1f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "ea0b5d0fe96356dce38f98375a57c52a04e13712",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "83bcf9228b0501694fb2589ed1d142855a2887f2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
        "lessThan": "5a8db80f721deee8e916c2cfdee78decda02ce4f",
        "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/smc/smc_clc.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "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": "6.6.140",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.86",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.27",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.4",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2
git	www.git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712
git	www.git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f
git	www.git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874
git	www.git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069
git	www.git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691
git	www.git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f
git	www.git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086

01 Jun 2026 16:17Current

CVSS 3.17.5

EPSS0.00068