CVE-2026-68098

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

ksmbd: bound DACL dedup walk to copied ACEs

set_ntacl_dacl() can stop copying ACEs before consuming the full input DACL when size accounting overflows.

When that happens, num_aces reflects only the ACEs that were actually copied into the output DACL, but set_posix_acl_entries_dacl() still receives nt_num_aces and uses it to walk the existing ACE array during dedup.

That makes the dedup walk scan past the copied ACE array and inspect buffer tail that does not contain valid ACEs.

Split the two meanings currently carried by the NT ACE count. Pass the number of copied NT ACEs to bound the dedup walk, and preserve the original "input DACL had NT ACEs" state separately for the Everyone/default ACL fallback.

This keeps the dedup walk aligned with the ACEs that are actually present in the rebuilt DACL.

CVSS v3
8.8
EG Score
8.8(high)
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
35%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 17, 2026

Advisory Details (5)

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

ksmbd: bound DACL dedup walk to copied ACEs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f1eba60db813ec28732bf18b5f0a67ebac9c3100
generic

ksmbd: bound DACL dedup walk to copied ACEs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b057a851129c6a084e7e393b62ca3abf6c2660bc
generic

ksmbd: bound DACL dedup walk to copied ACEs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0ebdaa79e10210d4e8ed9fe138e8f4d569719e3
generic

ksmbd: bound DACL dedup walk to copied ACEs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d9d7aa4a2c99c31acfa28921c30b684110cf66c
generic

ksmbd: bound DACL dedup walk to copied ACEs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/58d97fcd0bf1aee694e244cc28635b9df95b543b

Vendor Advisories for CVE-2026-68098(2)

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

Data Freshness Timeline

(refreshed 31× in last 7d / 46× 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 00:58 UTCEG score recompute
  2. 2026-08-21 00:57 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:08 UTCGHSA enrichment
  5. 2026-08-19 23:19 UTCEG score recompute
  6. 2026-08-19 23:19 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 10:29 UTCGHSA enrichment
  9. 2026-08-18 21:40 UTCEG score recompute
  10. 2026-08-18 21:40 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 08:23 UTCGHSA enrichment
  13. 2026-08-17 19:22 UTCEG score recompute
  14. 2026-08-17 19:22 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 05:41 UTCEG score recompute
  17. 2026-08-17 05:41 UTCGHSA enrichment
  18. 2026-08-17 05:12 UTCEG score recompute
  19. 2026-08-17 05:12 UTCGHSA enrichment
  20. 2026-08-17 04:26 UTCGHSA enrichment
  21. 2026-08-16 15:36 UTCEG score recompute
  22. 2026-08-16 15:36 UTCGHSA enrichment
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 02:47 UTCEG score recompute
  25. 2026-08-16 02:47 UTCGHSA enrichment
Show 21 more
  1. 2026-08-15 13:58 UTCEG score recompute
  2. 2026-08-15 13:58 UTCGHSA enrichment
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-15 01:09 UTCGHSA enrichment
  5. 2026-08-14 12:20 UTCEG score recompute
  6. 2026-08-14 12:20 UTCGHSA enrichment
  7. 2026-08-13 23:31 UTCEG score recompute
  8. 2026-08-13 23:31 UTCGHSA enrichment
  9. 2026-08-13 22:46 UTCEG score recompute▲ 8.80
  10. 2026-08-13 22:46 UTCGHSA enrichment
  11. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 00:22 UTCGHSA enrichment
  14. 2026-08-13 00:22 UTCNVD update
  15. 2026-08-13 00:06 UTCEG score recompute
  16. 2026-08-13 00:06 UTCGHSA enrichment
  17. 2026-08-13 00:05 UTCMITRE cvelistV5
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-10 13:24 UTCNVD update
  20. 2026-08-10 12:22 UTCEG score recompute
  21. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68098?
CVE-2026-68098 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: ksmbd: bound DACL dedup walk to copied ACEs setntacldacl() can stop copying ACEs before consuming the full input DACL when size accounting overflows. When that happens, num_aces reflects only the ACEs that were actually copied into…
When was CVE-2026-68098 disclosed?
CVE-2026-68098 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68098 actively exploited?
CVE-2026-68098 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 65.2% of all scored CVEs.
What is the CVSS score of CVE-2026-68098?
CVE-2026-68098 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-68098?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68098, 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

Explore the affected products and dependency analysis for CVE-2026-68098

Explore →

Is Your Infrastructure Affected by CVE-2026-68098?

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

Start Free Scan →Browse All CVEs