CVE-2026-90089

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.1Exploit: None knownExposed services: Not assessed

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

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

Bluetooth: btnxpuart: Validate the FW dump header length

nxp_process_fw_dump() pulls the ACL header off the frame and then reads seq_num and buf_len from a struct nxp_fw_dump_hdr placed at skb->data, without checking that the ACL payload is long enough to contain it.

h4_recv_buf() collects HCI_ACL_HDR_SIZE bytes of header followed by the number of payload bytes named in that header, so skb->len is 4 + dlen with dlen supplied by the controller and possibly smaller than the 8 byte dump header, or zero. A short frame with connection handle 0xfff therefore reads both fields from beyond the received data.

Beyond the read itself, buf_len is what terminates a dump: a value of zero makes the driver call hci_devcd_complete() and reset the controller, so a truncated frame can end a dump early.

Use skb_pull_data() to validate and pull the FW dump header before accessing its fields. Warn and reject the chunk if the header is truncated.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
24th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 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

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Bluetooth: btnxpuart: Validate the FW dump header length - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a644b8df94966b672ac656577df98bd01bc88393
generic

Bluetooth: btnxpuart: Validate the FW dump header length - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22d419db7f9a01bea22cfcf66774d2b2fd4bb354
generic

Bluetooth: btnxpuart: Validate the FW dump header length - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/060fa7592bdc043a93b6b7870f5b8551206d315d

Vendor Advisories for CVE-2026-90089(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (178 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 25× in last 7d / 68× 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. 2026-10-05 01:04 UTCEG score recompute
  2. 2026-10-05 01:04 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 11:55 UTCGHSA enrichment
  5. 2026-10-03 22:59 UTCEG score recompute
  6. 2026-10-03 22:58 UTCGHSA enrichment
  7. 2026-10-03 10:00 UTCGHSA enrichment
  8. 2026-10-02 20:45 UTCEG score recompute
  9. 2026-10-02 20:45 UTCGHSA enrichment
  10. 2026-10-02 07:49 UTCEG score recompute
  11. 2026-10-02 07:49 UTCGHSA enrichment
  12. 2026-10-01 19:51 UTCEPSS rescore
  13. 2026-10-01 18:52 UTCGHSA enrichment
  14. 2026-10-01 05:49 UTCGHSA enrichment
  15. 2026-09-30 16:53 UTCEG score recompute
  16. 2026-09-30 16:53 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 02:51 UTCEG score recompute
  19. 2026-09-30 02:51 UTCGHSA enrichment
  20. 2026-09-29 13:55 UTCGHSA enrichment
  21. 2026-09-29 00:59 UTCEG score recompute
  22. 2026-09-29 00:59 UTCGHSA enrichment
  23. 2026-09-28 13:52 UTCEPSS rescore
  24. 2026-09-28 13:52 UTCEPSS rescore
  25. 2026-09-28 12:03 UTCGHSA enrichment
Show 43 more
  1. 2026-09-27 23:07 UTCEG score recompute
  2. 2026-09-27 23:07 UTCGHSA enrichment
  3. 2026-09-27 13:49 UTCEPSS rescore
  4. 2026-09-27 10:10 UTCGHSA enrichment
  5. 2026-09-26 21:14 UTCEG score recompute
  6. 2026-09-26 21:14 UTCGHSA enrichment
  7. 2026-09-26 15:59 UTCEPSS rescore
  8. 2026-09-26 08:18 UTCEG score recompute
  9. 2026-09-26 08:18 UTCGHSA enrichment
  10. 2026-09-25 19:19 UTCGHSA enrichment
  11. 2026-09-25 05:48 UTCGHSA enrichment
  12. 2026-09-24 16:51 UTCEG score recompute
  13. 2026-09-24 16:51 UTCGHSA enrichment
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-24 03:55 UTCEG score recompute
  16. 2026-09-24 03:55 UTCGHSA enrichment
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 14:58 UTCGHSA enrichment
  19. 2026-09-23 02:02 UTCEG score recompute
  20. 2026-09-23 02:02 UTCGHSA enrichment
  21. 2026-09-22 16:01 UTCEPSS rescore
  22. 2026-09-22 13:05 UTCGHSA enrichment
  23. 2026-09-22 00:09 UTCEG score recompute
  24. 2026-09-22 00:09 UTCGHSA enrichment
  25. 2026-09-21 21:09 UTCEPSS rescore
  26. 2026-09-21 11:13 UTCGHSA enrichment
  27. 2026-09-20 22:17 UTCEG score recompute
  28. 2026-09-20 22:17 UTCGHSA enrichment
  29. 2026-09-20 20:16 UTCEPSS rescore
  30. 2026-09-20 09:21 UTCGHSA enrichment
  31. 2026-09-19 20:24 UTCEG score recompute
  32. 2026-09-19 20:24 UTCGHSA enrichment
  33. 2026-09-19 07:27 UTCEG score recompute
  34. 2026-09-19 07:27 UTCGHSA enrichment
  35. 2026-09-18 19:28 UTCEPSS rescore
  36. 2026-09-18 18:31 UTCEG score recompute
  37. 2026-09-18 18:31 UTCGHSA enrichment
  38. 2026-09-18 18:06 UTCEG score recompute▲ 7.10
  39. 2026-09-18 18:06 UTCGHSA enrichment
  40. 2026-09-18 17:59 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  41. 2026-09-17 17:23 UTCNVD update
  42. 2026-09-17 16:51 UTCEG score recompute
  43. 2026-09-17 16:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90089?
CVE-2026-90089 is a high vulnerability published on September 17, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btnxpuart: Validate the FW dump header length nxpprocessfw_dump() pulls the ACL header off the frame and then reads seqnum and buflen from a struct nxpfwdump_hdr placed at skb->data, without checking that the ACL payload…
When was CVE-2026-90089 disclosed?
CVE-2026-90089 was first published on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90089 actively exploited?
CVE-2026-90089 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90089?
CVE-2026-90089 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90089?
No fix for CVE-2026-90089 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-90089 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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