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Description

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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-27 | Updated 2026-06-01 | Assigner Linux




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Product status

Default status
unaffected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 257cdf0c5ced9c0fba8aba501d94b0a5fcef2086
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 22546729b96fc873b23065dc49e3d73c45cfb874
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 5eedbfd82c2884e0010fdfb3c9446a6ebcadb691
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before f0858e1d5624bb120b198f2a8528f97a9b0ae069
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 6180a296ca65b08a81914805cbc0f78da5f10a1f
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before ea0b5d0fe96356dce38f98375a57c52a04e13712
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 83bcf9228b0501694fb2589ed1d142855a2887f2
affected

0cfdd8f92cac01afbb12e4500514036a2b78756b (git) before 5a8db80f721deee8e916c2cfdee78decda02ce4f
affected

Default status
affected

4.11
affected

Any version before 4.11
unaffected

5.10.258 (semver)
unaffected

5.15.209 (semver)
unaffected

6.1.175 (semver)
unaffected

6.6.140 (semver)
unaffected

6.12.86 (semver)
unaffected

6.18.27 (semver)
unaffected

7.0.4 (semver)
unaffected

7.1-rc1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086

git.kernel.org/...c/22546729b96fc873b23065dc49e3d73c45cfb874

git.kernel.org/...c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691

git.kernel.org/...c/f0858e1d5624bb120b198f2a8528f97a9b0ae069

git.kernel.org/...c/6180a296ca65b08a81914805cbc0f78da5f10a1f

git.kernel.org/...c/ea0b5d0fe96356dce38f98375a57c52a04e13712

git.kernel.org/...c/83bcf9228b0501694fb2589ed1d142855a2887f2

git.kernel.org/...c/5a8db80f721deee8e916c2cfdee78decda02ce4f

cve.org (CVE-2026-46027)

nvd.nist.gov (CVE-2026-46027)

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