CVE-2026-68391

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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:

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF.

Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid.

When accessing conn->state, ensure hdev->lock is held to avoid data race.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
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

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172
generic

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734
generic

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46
generic

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0
generic

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc

Vendor Advisories for CVE-2026-68391(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. 2026-08-20 23:10 UTCEG score recompute
  2. 2026-08-20 23:10 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:08 UTCGHSA enrichment
  5. 2026-08-20 01:06 UTCEG score recompute
  6. 2026-08-20 01:06 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 14:03 UTCGHSA enrichment
  9. 2026-08-19 02:57 UTCGHSA enrichment
  10. 2026-08-18 15:41 UTCEG score recompute
  11. 2026-08-18 15:41 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 04:38 UTCGHSA enrichment
  15. 2026-08-17 17:34 UTCEG score recompute
  16. 2026-08-17 17:34 UTCGHSA enrichment
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-17 06:31 UTCEG score recompute
  19. 2026-08-17 06:31 UTCGHSA enrichment
  20. 2026-08-17 05:36 UTCEG score recompute
  21. 2026-08-17 05:36 UTCGHSA enrichment
  22. 2026-08-17 05:03 UTCGHSA enrichment
  23. 2026-08-16 18:00 UTCEG score recompute
  24. 2026-08-16 18:00 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 21 more
  1. 2026-08-16 06:57 UTCEG score recompute
  2. 2026-08-16 06:57 UTCGHSA enrichment
  3. 2026-08-15 19:55 UTCGHSA enrichment
  4. 2026-08-15 08:52 UTCEG score recompute
  5. 2026-08-15 08:52 UTCGHSA enrichment
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 21:49 UTCGHSA enrichment
  8. 2026-08-14 10:46 UTCEG score recompute
  9. 2026-08-14 10:46 UTCGHSA enrichment
  10. 2026-08-13 23:44 UTCEG score recompute
  11. 2026-08-13 23:44 UTCGHSA enrichment
  12. 2026-08-13 23:03 UTCEG score recompute▲ 7.80
  13. 2026-08-13 23:03 UTCGHSA enrichment
  14. 2026-08-13 23:03 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-13 09:35 UTCEG score recompute
  17. 2026-08-13 09:35 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-2026-68391?
CVE-2026-68391 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hciconn in mgmtpending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hciconn in hcisync callbacks also needs to hold refcount to avoid…
When was CVE-2026-68391 disclosed?
CVE-2026-68391 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-2026-68391 actively exploited?
CVE-2026-68391 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-68391?
CVE-2026-68391 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-68391?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68391, 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-2026-68391

Explore →

Is Your Infrastructure Affected by CVE-2026-68391?

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

Start Free Scan →Browse All CVEs