CVE-2026-68353

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: 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 read from firmware num_msg in TX complete handler

The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg.

Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
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 read from firmware num_msg in TX complete handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f
generic

wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540
generic

wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea
generic

wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495
generic

wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb

Vendor Advisories for CVE-2026-68353(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 34× 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 02:34 UTCEG score recompute
  2. 2026-08-21 02:34 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 15:30 UTCGHSA enrichment
  5. 2026-08-20 04:27 UTCGHSA enrichment
  6. 2026-08-19 17:24 UTCEG score recompute
  7. 2026-08-19 17:24 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 16:54 UTCEG score recompute
  10. 2026-08-19 16:54 UTCGHSA enrichment
  11. 2026-08-19 14:03 UTCGHSA enrichment
  12. 2026-08-19 02:57 UTCGHSA enrichment
  13. 2026-08-18 15:43 UTCEG score recompute
  14. 2026-08-18 15:43 UTCGHSA enrichment
  15. 2026-08-18 13:49 UTCEPSS rescore
  16. 2026-08-18 13:49 UTCEPSS rescore
  17. 2026-08-18 04:40 UTCGHSA enrichment
  18. 2026-08-17 17:37 UTCEG score recompute
  19. 2026-08-17 17:37 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 06:32 UTCGHSA enrichment
  22. 2026-08-17 05:04 UTCGHSA enrichment
  23. 2026-08-16 18:01 UTCEG score recompute
  24. 2026-08-16 18:01 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 21 more
  1. 2026-08-16 06:58 UTCEG score recompute
  2. 2026-08-16 06:58 UTCGHSA enrichment
  3. 2026-08-15 19:56 UTCGHSA enrichment
  4. 2026-08-15 08:53 UTCEG score recompute
  5. 2026-08-15 08:53 UTCGHSA enrichment
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 21:50 UTCGHSA enrichment
  8. 2026-08-14 10:47 UTCEG score recompute
  9. 2026-08-14 10:47 UTCGHSA enrichment
  10. 2026-08-13 23:45 UTCEG score recompute
  11. 2026-08-13 23:45 UTCGHSA enrichment
  12. 2026-08-13 23:04 UTCEG score recompute▲ 8.10
  13. 2026-08-13 23:04 UTCGHSA enrichment
  14. 2026-08-13 23:03 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-13 13:23 UTCEG score recompute
  17. 2026-08-13 13:23 UTCGHSA enrichment
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-10 13:24 UTCNVD update
  20. 2026-08-10 12:18 UTCEG score recompute
  21. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68353?
CVE-2026-68353 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6klwmitxcompleteevent_rx() without validation against the buffer length. This allows…
When was CVE-2026-68353 disclosed?
CVE-2026-68353 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-2026-68353 actively exploited?
CVE-2026-68353 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 78.4% of all scored CVEs.
What is the CVSS score of CVE-2026-68353?
CVE-2026-68353 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-68353?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68353, 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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