CVE-2026-46027

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 6, 2026
No patch confirmed yet.
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086
generic

net/smc: avoid early lgr access in smc_clc_wait_msg - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874

Vendor Advisories for CVE-2026-46027(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-08-25ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.86-1~bpo12+1 (19 versions)6.12.86-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.4-1~bpo13+1 (131 versions)7.0.4-1—

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 87× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 277 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 01:22 UTCEPSS rescore
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-25 05:27 UTCEG score recompute
  11. 2026-08-25 05:27 UTCVendor advisory
  12. 2026-08-25 05:26 UTCGHSA enrichment
  13. 2026-08-23 15:13 UTCEG score recompute
  14. 2026-08-23 15:13 UTCVendor advisory
  15. 2026-08-23 15:12 UTCGHSA enrichment
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 20:41 UTCVendor advisory
  19. 2026-08-21 20:41 UTCGHSA enrichment
  20. 2026-08-21 01:41 UTCEG score recompute
  21. 2026-08-21 01:41 UTCVendor advisory
  22. 2026-08-21 01:40 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 11:29 UTCEG score recompute
  25. 2026-08-20 11:29 UTCVendor advisory
Show 75 more
  1. 2026-08-20 11:28 UTCGHSA enrichment
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-18 13:48 UTCEPSS rescore
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 09:18 UTCVendor advisory
  6. 2026-08-17 09:18 UTCGHSA enrichment
  7. 2026-08-16 15:34 UTCEG score recompute
  8. 2026-08-16 15:34 UTCVendor advisory
  9. 2026-08-16 15:34 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 02:51 UTCEG score recompute
  12. 2026-08-16 02:51 UTCVendor advisory
  13. 2026-08-16 02:51 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 02:07 UTCEG score recompute
  16. 2026-08-15 02:07 UTCVendor advisory
  17. 2026-08-15 02:07 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 13:48 UTCVendor advisory
  20. 2026-08-14 13:48 UTCGHSA enrichment
  21. 2026-08-14 01:28 UTCEG score recompute
  22. 2026-08-14 01:28 UTCVendor advisory
  23. 2026-08-14 01:28 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 02:36 UTCVendor advisory
  26. 2026-08-13 02:36 UTCGHSA enrichment
  27. 2026-08-12 14:16 UTCEG score recompute
  28. 2026-08-12 14:16 UTCVendor advisory
  29. 2026-08-12 14:16 UTCGHSA enrichment
  30. 2026-08-12 13:51 UTCEPSS rescore
  31. 2026-08-12 01:56 UTCEG score recompute
  32. 2026-08-12 01:56 UTCVendor advisory
  33. 2026-08-12 01:56 UTCGHSA enrichment
  34. 2026-08-11 13:36 UTCVendor advisory
  35. 2026-08-11 13:36 UTCGHSA enrichment
  36. 2026-08-11 00:13 UTCEG score recompute
  37. 2026-08-11 00:13 UTCVendor advisory
  38. 2026-08-11 00:13 UTCGHSA enrichment
  39. 2026-08-11 00:00 UTCEPSS rescore
  40. 2026-08-10 10:33 UTCVendor advisory
  41. 2026-08-10 10:33 UTCGHSA enrichment
  42. 2026-08-09 22:12 UTCEG score recompute
  43. 2026-08-09 22:12 UTCVendor advisory
  44. 2026-08-09 22:12 UTCGHSA enrichment
  45. 2026-08-09 13:46 UTCEPSS rescore
  46. 2026-08-09 09:52 UTCVendor advisory
  47. 2026-08-09 09:52 UTCGHSA enrichment
  48. 2026-08-08 21:32 UTCEG score recompute
  49. 2026-08-08 21:32 UTCVendor advisory
  50. 2026-08-08 21:32 UTCGHSA enrichment
  51. 2026-08-08 16:37 UTCEPSS rescore
  52. 2026-08-08 03:23 UTCEG score recompute
  53. 2026-08-08 03:23 UTCVendor advisory
  54. 2026-08-08 03:23 UTCGHSA enrichment
  55. 2026-08-07 15:03 UTCVendor advisory
  56. 2026-08-07 15:03 UTCGHSA enrichment
  57. 2026-08-07 02:43 UTCVendor advisory
  58. 2026-08-07 02:43 UTCGHSA enrichment
  59. 2026-08-06 14:23 UTCEG score recompute
  60. 2026-08-06 14:23 UTCVendor advisory
  61. 2026-08-06 14:23 UTCGHSA enrichment
  62. 2026-08-06 13:47 UTCEPSS rescore
  63. 2026-08-06 02:02 UTCEG score recompute
  64. 2026-08-06 02:02 UTCVendor advisory
  65. 2026-08-06 02:02 UTCGHSA enrichment
  66. 2026-08-05 19:17 UTCEPSS rescore
  67. 2026-08-05 13:43 UTCEG score recompute
  68. 2026-08-05 13:43 UTCVendor advisory
  69. 2026-08-05 13:42 UTCGHSA enrichment
  70. 2026-08-04 15:10 UTCEPSS rescore
  71. 2026-08-04 10:39 UTCEPSS rescore
  72. 2026-08-04 05:20 UTCVendor advisory
  73. 2026-08-04 05:20 UTCGHSA enrichment
  74. 2026-08-03 16:48 UTCEG score recompute
  75. 2026-08-03 16:48 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-46027?
CVE-2026-46027 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid early lgr access in smcclcwait_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 smcclcwait_msg()…
When was CVE-2026-46027 disclosed?
CVE-2026-46027 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46027 actively exploited?
CVE-2026-46027 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 59.0% of all scored CVEs.
What is the CVSS score of CVE-2026-46027?
CVE-2026-46027 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46027?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46027, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-46027

Explore →

Is Your Infrastructure Affected by CVE-2026-46027?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs