CVE-2026-46027net/smc: avoid early lgr access in smc_clc_wait_msg
Updated under an hour ago ()
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 257cdf0c5ced9c0fba8aba501d94b0a5fcef2086; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 22546729b96fc873b23065dc49e3d73c45cfb874; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 5eedbfd82c2884e0010fdfb3c9446a6ebcadb691; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before f0858e1d5624bb120b198f2a8528f97a9b0ae069; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 6180a296ca65b08a81914805cbc0f78da5f10a1f; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before ea0b5d0fe96356dce38f98375a57c52a04e13712; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 83bcf9228b0501694fb2589ed1d142855a2887f2; from 0cfdd8f92cac01afbb12e4500514036a2b78756b before 5a8db80f721deee8e916c2cfdee78decda02ce4f | CNA record |
linux linux_kernel linux:linux_kernel | from 4.11 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4 | NVD |
References
- https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086patch
- https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874patch
- https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691patch
- https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069patch
- https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1fpatch
- https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712patch
- https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2patch
- https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4fpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.