01 Record

CVE-2026-46027

net/smc: avoid early lgr access in smc_clc_wait_msg

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

net/smc: avoid early lgr access in smc_clc_wait_msg

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 42.6% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-27 12:56Z5 MO AGO

Last updated

2026-10-19 19:26Z9 DAYS AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

CWE-617Reachable AssertionBase

Data version

5.2

Document digest

22d80b571b9a285d351ee7e4718c0fac90e99ce731e51e5029f3d7dd1e848701

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0cfdd8f92cac01afbb12e4500514036a2b78756b to < 257cdf0c5ced9c0fba8aba501d94b0a5fcef2086, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < 22546729b96fc873b23065dc49e3d73c45cfb874, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < 5eedbfd82c2884e0010fdfb3c9446a6ebcadb691, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < f0858e1d5624bb120b198f2a8528f97a9b0ae069, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < 6180a296ca65b08a81914805cbc0f78da5f10a1f, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < ea0b5d0fe96356dce38f98375a57c52a04e13712, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < 83bcf9228b0501694fb2589ed1d142855a2887f2, 0cfdd8f92cac01afbb12e4500514036a2b78756b to < 5a8db80f721deee8e916c2cfdee78decda02ce4f, 4.11—

06 References

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

07 Fixed in

Debian 12

linux
Fixed in 6.1.176-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.86-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.0.4-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.