CVE-2026-46330

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

Revert "net/smc: Introduce TCP ULP support"

This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.

As reported by Al Viro, the TCP ULP support for SMC is fundamentally broken. The implementation attempts to convert an active TCP socket into an SMC socket by modifying the underlying struct file, dentry, and inode in-place, which violates core VFS invariants that assume these structures are immutable for an open file, creating a risk of use after free errors and general system instability.

Given the severity of this design flaw and the fact that cleaner alternatives (e.g., LD_PRELOAD, BPF) exist for legacy application transparency, the correct course of action is to remove this feature entirely.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

Revert "net/smc: Introduce TCP ULP support" - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df31a6b0a3057e66994ad6ccf5d95b9b9514f033
generic

Revert "net/smc: Introduce TCP ULP support" - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c505d95c69e27dbf28fea29dc84d2498d69515c

Vendor Advisories for CVE-2026-46330(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-687.46.1.el9_82026-09-10redhat

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (350 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (174 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (116 versions)6.19.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 223 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46330?
CVE-2026-46330 is a high vulnerability published on June 9, 2026. In the Linux kernel, the following vulnerability has been resolved: Revert "net/smc: Introduce TCP ULP support" This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40. As reported by Al Viro, the TCP ULP support for SMC is fundamentally broken. The implementation attempts to convert an active…
When was CVE-2026-46330 disclosed?
CVE-2026-46330 was first published in the National Vulnerability Database on June 9, 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-2026-46330 actively exploited?
CVE-2026-46330 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-46330?
CVE-2026-46330 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46330?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46330, 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

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