CVE-2026-68199

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 — 4 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:

wifi: ath6kl: fix OOB access from firmware ADDBA window size

aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access.

Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.

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 19, 2026

Advisory Details (5)

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

wifi: ath6kl: fix OOB access from firmware ADDBA window size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4
generic

wifi: ath6kl: fix OOB access from firmware ADDBA window size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2
generic

wifi: ath6kl: fix OOB access from firmware ADDBA window size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882
generic

wifi: ath6kl: fix OOB access from firmware ADDBA window size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c
generic

wifi: ath6kl: fix OOB access from firmware ADDBA window size - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327

Vendor Advisories for CVE-2026-68199(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 37× in last 7d / 49× 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 03:08 UTCEG score recompute
  2. 2026-08-21 03:08 UTCVendor advisory
  3. 2026-08-21 03:08 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 15:54 UTCGHSA enrichment
  6. 2026-08-20 04:40 UTCGHSA enrichment
  7. 2026-08-19 17:25 UTCEG score recompute
  8. 2026-08-19 17:25 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 16:55 UTCEG score recompute
  11. 2026-08-19 16:55 UTCGHSA enrichment
  12. 2026-08-19 14:12 UTCGHSA enrichment
  13. 2026-08-19 02:58 UTCGHSA enrichment
  14. 2026-08-18 15:38 UTCEG score recompute
  15. 2026-08-18 15:38 UTCGHSA enrichment
  16. 2026-08-18 13:49 UTCEPSS rescore
  17. 2026-08-18 13:49 UTCEPSS rescore
  18. 2026-08-18 04:07 UTCGHSA enrichment
  19. 2026-08-17 16:52 UTCEG score recompute
  20. 2026-08-17 16:52 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 05:38 UTCEG score recompute
  23. 2026-08-17 05:38 UTCGHSA enrichment
  24. 2026-08-17 05:09 UTCEG score recompute
  25. 2026-08-17 05:09 UTCGHSA enrichment
Show 24 more
  1. 2026-08-16 18:59 UTCEG score recompute
  2. 2026-08-16 18:59 UTCGHSA enrichment
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 07:39 UTCEG score recompute
  5. 2026-08-16 07:39 UTCGHSA enrichment
  6. 2026-08-15 20:26 UTCGHSA enrichment
  7. 2026-08-15 09:12 UTCEG score recompute
  8. 2026-08-15 09:12 UTCGHSA enrichment
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-14 21:58 UTCGHSA enrichment
  11. 2026-08-14 10:44 UTCEG score recompute
  12. 2026-08-14 10:44 UTCGHSA enrichment
  13. 2026-08-13 23:30 UTCEG score recompute
  14. 2026-08-13 23:30 UTCGHSA enrichment
  15. 2026-08-13 22:45 UTCEG score recompute▲ 8.80
  16. 2026-08-13 22:45 UTCGHSA enrichment
  17. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 16:57 UTCEG score recompute
  20. 2026-08-13 16:57 UTCGHSA enrichment
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-10 13:24 UTCNVD update
  23. 2026-08-10 12:20 UTCEG score recompute
  24. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-68199?
CVE-2026-68199 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB access from firmware ADDBA window size aggrrecvaddbareqevt() logs a debug message when the firmware-supplied winsz is outside [AGGRWINSZMIN, AGGRWINSZ_MAX] but does not return. The out-of-range winsz is then…
When was CVE-2026-68199 disclosed?
CVE-2026-68199 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-2026-68199 actively exploited?
CVE-2026-68199 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 65.4% of all scored CVEs.
What is the CVSS score of CVE-2026-68199?
CVE-2026-68199 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-68199?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68199, 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.

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