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CVE Vulnerability Details :
CVE-2026-46027
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-27 May, 2026 | 12:56
Updated At-01 Jun, 2026 | 16:17
Rejected At-
▼CVE Numbering Authority (CNA)
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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/smc/smc_clc.c
Default Status
unaffected
Versions
Affected
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 257cdf0c5ced9c0fba8aba501d94b0a5fcef2086 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 22546729b96fc873b23065dc49e3d73c45cfb874 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 5eedbfd82c2884e0010fdfb3c9446a6ebcadb691 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before f0858e1d5624bb120b198f2a8528f97a9b0ae069 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 6180a296ca65b08a81914805cbc0f78da5f10a1f (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before ea0b5d0fe96356dce38f98375a57c52a04e13712 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 83bcf9228b0501694fb2589ed1d142855a2887f2 (git)
  • From 0cfdd8f92cac01afbb12e4500514036a2b78756b before 5a8db80f721deee8e916c2cfdee78decda02ce4f (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/smc/smc_clc.c
Default Status
affected
Versions
Affected
  • 4.11
Unaffected
  • From 0 before 4.11 (semver)
  • From 5.10.258 through 5.10.* (semver)
  • From 5.15.209 through 5.15.* (semver)
  • From 6.1.175 through 6.1.* (semver)
  • From 6.6.140 through 6.6.* (semver)
  • From 6.12.86 through 6.12.* (semver)
  • From 6.18.27 through 6.18.* (semver)
  • From 7.0.4 through 7.0.* (semver)
  • From 7.1-rc1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086
N/A
https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874
N/A
https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691
N/A
https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069
N/A
https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f
N/A
https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712
N/A
https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2
N/A
https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f
N/A
Hyperlink: https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f
Resource: N/A
Details not found