CVE-2026-68343

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-10. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

A fix is available — apply it.

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

smb: client: validate DFS referral PathConsumed

parse_dfs_referrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a PathConsumed value that is later used for DFS path parsing.

If a malformed response provides a PathConsumed value larger than the search name, later DFS parsing can advance beyond the end of the path.

Validate PathConsumed against the search name length before storing it in the parsed referral.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

smb: client: validate DFS referral PathConsumed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f6f5ee2aa33b350c671721b965251c42cebb962e
generic

smb: client: validate DFS referral PathConsumed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9f88a99ed511651b2dc2177d6854b2d1b8322e75
generic

smb: client: validate DFS referral PathConsumed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2fdd6d196c656b376cc251e1e9ff110b3ed522e1
generic

smb: client: validate DFS referral PathConsumed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/285bd4a5f3f156aa5869843b47a1b1380b774241
generic

smb: client: validate DFS referral PathConsumed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5b439f39f33ec15d319ced3b025e122346fba987

Vendor Advisories for CVE-2026-68343(2)

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-0:5.14.0-687.41.1.el9_82026-08-20redhat

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.

Additional Vendor Advisories

(1)

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 69× in last 7d / 84× 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.

  1. 2026-08-21 09:12 UTCVendor advisory
  2. 2026-08-21 09:12 UTCGHSA enrichment
  3. 2026-08-21 05:35 UTCVendor advisory
  4. 2026-08-21 05:35 UTCGHSA enrichment
  5. 2026-08-21 01:58 UTCEG score recompute
  6. 2026-08-21 01:58 UTCVendor advisory
  7. 2026-08-21 01:58 UTCGHSA enrichment
  8. 2026-08-20 22:56 UTCEPSS rescore
  9. 2026-08-20 22:21 UTCGHSA enrichment
  10. 2026-08-20 18:45 UTCGHSA enrichment
  11. 2026-08-20 15:08 UTCGHSA enrichment
  12. 2026-08-20 11:28 UTCGHSA enrichment
  13. 2026-08-20 07:51 UTCGHSA enrichment
  14. 2026-08-20 04:15 UTCGHSA enrichment
  15. 2026-08-20 00:38 UTCGHSA enrichment
  16. 2026-08-19 21:01 UTCGHSA enrichment
  17. 2026-08-19 17:24 UTCEG score recompute
  18. 2026-08-19 17:24 UTCGHSA enrichment
  19. 2026-08-19 17:04 UTCEPSS rescore
  20. 2026-08-19 16:54 UTCEG score recompute
  21. 2026-08-19 16:54 UTCGHSA enrichment
  22. 2026-08-19 15:20 UTCGHSA enrichment
  23. 2026-08-19 11:30 UTCGHSA enrichment
  24. 2026-08-19 07:51 UTCGHSA enrichment
  25. 2026-08-19 04:14 UTCGHSA enrichment
Show 59 more
  1. 2026-08-19 00:38 UTCGHSA enrichment
  2. 2026-08-18 21:01 UTCGHSA enrichment
  3. 2026-08-18 17:24 UTCEG score recompute
  4. 2026-08-18 17:24 UTCGHSA enrichment
  5. 2026-08-18 13:49 UTCEPSS rescore
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 12:46 UTCGHSA enrichment
  8. 2026-08-18 08:22 UTCGHSA enrichment
  9. 2026-08-18 04:30 UTCGHSA enrichment
  10. 2026-08-18 00:53 UTCGHSA enrichment
  11. 2026-08-17 20:59 UTCGHSA enrichment
  12. 2026-08-17 17:22 UTCEG score recompute
  13. 2026-08-17 17:22 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 13:45 UTCGHSA enrichment
  16. 2026-08-17 10:08 UTCGHSA enrichment
  17. 2026-08-17 06:32 UTCEG score recompute
  18. 2026-08-17 06:32 UTCGHSA enrichment
  19. 2026-08-17 05:36 UTCEG score recompute
  20. 2026-08-17 05:36 UTCGHSA enrichment
  21. 2026-08-17 03:35 UTCGHSA enrichment
  22. 2026-08-16 23:58 UTCGHSA enrichment
  23. 2026-08-16 20:21 UTCGHSA enrichment
  24. 2026-08-16 16:44 UTCEG score recompute
  25. 2026-08-16 16:44 UTCGHSA enrichment
  26. 2026-08-16 14:56 UTCEPSS rescore
  27. 2026-08-16 13:08 UTCGHSA enrichment
  28. 2026-08-16 09:31 UTCGHSA enrichment
  29. 2026-08-16 05:55 UTCGHSA enrichment
  30. 2026-08-16 02:18 UTCEG score recompute
  31. 2026-08-16 02:18 UTCGHSA enrichment
  32. 2026-08-15 22:42 UTCGHSA enrichment
  33. 2026-08-15 19:05 UTCGHSA enrichment
  34. 2026-08-15 15:28 UTCGHSA enrichment
  35. 2026-08-15 11:51 UTCGHSA enrichment
  36. 2026-08-15 08:14 UTCGHSA enrichment
  37. 2026-08-15 04:37 UTCEG score recompute
  38. 2026-08-15 04:37 UTCGHSA enrichment
  39. 2026-08-15 01:30 UTCEPSS rescore
  40. 2026-08-15 01:00 UTCGHSA enrichment
  41. 2026-08-14 21:24 UTCGHSA enrichment
  42. 2026-08-14 17:47 UTCGHSA enrichment
  43. 2026-08-14 14:11 UTCGHSA enrichment
  44. 2026-08-14 10:34 UTCGHSA enrichment
  45. 2026-08-14 06:58 UTCGHSA enrichment
  46. 2026-08-14 03:21 UTCEG score recompute
  47. 2026-08-14 03:21 UTCGHSA enrichment
  48. 2026-08-13 23:45 UTCEG score recompute
  49. 2026-08-13 23:45 UTCGHSA enrichment
  50. 2026-08-13 23:04 UTCEG score recompute▲ 9.10
  51. 2026-08-13 23:04 UTCGHSA enrichment
  52. 2026-08-13 23:03 UTCMITRE cvelistV5CVSS v3 → 9.1 · severity → CRITICAL
  53. 2026-08-13 22:00 UTCEPSS rescore
  54. 2026-08-13 09:52 UTCEG score recompute
  55. 2026-08-13 09:52 UTCGHSA enrichment
  56. 2026-08-12 13:51 UTCEPSS rescore
  57. 2026-08-10 13:24 UTCNVD update
  58. 2026-08-10 12:18 UTCEG score recompute
  59. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68343?
CVE-2026-68343 is a critical vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: smb: client: validate DFS referral PathConsumed parsedfsreferrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a…
When was CVE-2026-68343 disclosed?
CVE-2026-68343 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68343 actively exploited?
CVE-2026-68343 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 58.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68343?
CVE-2026-68343 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-68343?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68343, 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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