CVE-2026-68343

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM 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 — 4 sources updated 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: 0.5%CVSS: 9.1Exploit: None knownExposed services: Not assessed

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
9.1CRITICALmedium confidence
EG Risk
46
EG Risk 46/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (6)

Auto-updated Sep 15, 2026
Patch available.
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/bfebe5110fd135d86d65a0a346e14c106b02028b
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/5b439f39f33ec15d319ced3b025e122346fba987
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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-10-05ubuntu
redhatkernel-0:4.18.0-553.160.1.el8_102026-09-09redhat
redhatkernel-rt-0:4.18.0-553.160.1.rt7.501.el8_102026-09-08redhat
redhatrhcos-4.22.9.8.202608251819-02026-09-01redhat
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.

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1
  • every version up to 6.12.101-1~deb12u1: fixed in 6.12.101-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)
  • every version up to 6.12.101-1: fixed in 6.12.101-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (161 versions)
  • every version up to 7.1.6-1: fixed in 7.1.6-1
—

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 46× in last 7d / 287× 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 551 total refreshes for this CVE.

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

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 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 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-68343?
CVE-2026-68343 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-68343?
A fix for CVE-2026-68343 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-68343 are linked in the Vendor Advisories panel on this page.

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