net/smc: avoid early lgr access in smc_clc_wait_msg
In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid early lgr access in smc_clc_wait_msg A CLC decline can be received while the handshake is still in an early stage, before the connection has been associated with a link group. The decline handling in smc_clc_wait_msg() updates link-group level sync state for first-contact declines, but that state only exists after link group setup has completed. Guard the link-group update accordingly and keep the per-socket peer diagnosis handling unchanged. This preserves the existing sync_err handling for established link-group contexts and avoids touching link-group state before it is available.
CVE-2026-46027
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-46027
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "257cdf0c5ced9c0fba8aba501d94b0a5fcef2086",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "22546729b96fc873b23065dc49e3d73c45cfb874",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "5eedbfd82c2884e0010fdfb3c9446a6ebcadb691",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "f0858e1d5624bb120b198f2a8528f97a9b0ae069",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "6180a296ca65b08a81914805cbc0f78da5f10a1f",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "ea0b5d0fe96356dce38f98375a57c52a04e13712",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "83bcf9228b0501694fb2589ed1d142855a2887f2",
"versionType": "git"
},
{
"status": "affected",
"version": "0cfdd8f92cac01afbb12e4500514036a2b78756b",
"lessThan": "5a8db80f721deee8e916c2cfdee78decda02ce4f",
"versionType": "git"
}
],
"programFiles": [
"net/smc/smc_clc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/smc/smc_clc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46027
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40106 · Revision 1
- Added to Heist Feed
- Publisher date