CVE-2026-43239

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

smb: client: prevent races in ->query_interfaces()

It was possible for two query interface works to be concurrently trying to update the interfaces.

Prevent this by checking and updating iface_last_update under iface_lock.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

May 6, 2026

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated May 12, 2026
No patch confirmed yet.
generic

smb: client: prevent races in ->query_interfaces() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c3c06e42e1527716c54f3ad2ced6a034b5f3a489
generic

smb: client: prevent races in ->query_interfaces() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ab6564f416a6eaf1199200b6100952407b438f7d
generic

smb: client: prevent races in ->query_interfaces() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/93e8e3ee165ae4609a1222b516b573837103d2c3
generic

smb: client: prevent races in ->query_interfaces() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/76cc4faba0343c6db945b8dc75425b33d633e1b8
generic

smb: client: prevent races in ->query_interfaces() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6287eefaf21ec805d42f941bd368018cf397a7f5

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-23ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
linuxKernel @ 6.6.128—osv

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
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (116 versions)6.19.6-1—

All Vendor Advisories

(12)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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 217 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-43239?
CVE-2026-43239 is a high vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in ->query_interfaces() It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating ifacelastupdate under iface_lock.
When was CVE-2026-43239 disclosed?
CVE-2026-43239 was first published in the National Vulnerability Database on May 6, 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-2026-43239 actively exploited?
CVE-2026-43239 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 71.3% of all scored CVEs.
What is the CVSS score of CVE-2026-43239?
CVE-2026-43239 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-43239?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43239, 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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