CVE-2026-90353

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. A secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.0Exploit: 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:

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path

After mt7915_register_ext_phy() succeeded, a failure of the main PHY mt7915_init_debugfs() or mt7915_coredump_register() unwound through free_phy2, which called ieee80211_free_hw() on the ext PHY hw while it was still registered with mac80211, since mt76_unregister_device() only unregisters the main hw. Unregister the ext PHY (thermal + phy + hw) first and skip the redundant free.

CVSS v3
7.0
EG Score
7.0HIGHhigh confidence
EG Risk
36
EG Risk 36/100CISA 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
Severity70% × 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
0.2%
EPSS %ILE
3rd
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 (6)

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

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf
generic

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71
generic

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5
generic

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd
generic

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a
generic

wifi: mt76: mt7915: fix ext PHY use-after-free on register error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421

Vendor Advisories for CVE-2026-90353(1)

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

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 26× in last 7d / 71× 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 02:14 UTCEG score recompute
  2. 2026-10-05 02:14 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 13:55 UTCGHSA enrichment
  5. 2026-10-04 01:47 UTCEG score recompute
  6. 2026-10-04 01:47 UTCGHSA enrichment
  7. 2026-10-03 13:39 UTCGHSA enrichment
  8. 2026-10-03 01:31 UTCEG score recompute
  9. 2026-10-03 01:31 UTCGHSA enrichment
  10. 2026-10-02 13:23 UTCGHSA enrichment
  11. 2026-10-02 01:15 UTCEG score recompute
  12. 2026-10-02 01:15 UTCGHSA enrichment
  13. 2026-10-01 19:51 UTCEPSS rescore
  14. 2026-10-01 13:07 UTCGHSA enrichment
  15. 2026-10-01 00:59 UTCEG score recompute
  16. 2026-10-01 00:59 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 12:52 UTCGHSA enrichment
  19. 2026-09-30 00:43 UTCEG score recompute
  20. 2026-09-30 00:43 UTCGHSA enrichment
  21. 2026-09-29 09:29 UTCEG score recompute
  22. 2026-09-29 09:29 UTCGHSA enrichment
  23. 2026-09-28 21:21 UTCEG score recompute
  24. 2026-09-28 21:21 UTCGHSA enrichment
  25. 2026-09-28 13:52 UTCEPSS rescore
Show 46 more
  1. 2026-09-28 13:52 UTCEPSS rescore
  2. 2026-09-28 09:13 UTCGHSA enrichment
  3. 2026-09-27 21:06 UTCEG score recompute
  4. 2026-09-27 21:06 UTCGHSA enrichment
  5. 2026-09-27 13:49 UTCEPSS rescore
  6. 2026-09-27 08:57 UTCGHSA enrichment
  7. 2026-09-26 20:49 UTCEG score recompute
  8. 2026-09-26 20:49 UTCGHSA enrichment
  9. 2026-09-26 15:59 UTCEPSS rescore
  10. 2026-09-26 08:37 UTCEG score recompute
  11. 2026-09-26 08:37 UTCGHSA enrichment
  12. 2026-09-25 20:29 UTCGHSA enrichment
  13. 2026-09-25 08:21 UTCGHSA enrichment
  14. 2026-09-24 20:13 UTCEG score recompute
  15. 2026-09-24 20:13 UTCGHSA enrichment
  16. 2026-09-24 14:04 UTCEPSS rescore
  17. 2026-09-24 08:05 UTCGHSA enrichment
  18. 2026-09-23 19:57 UTCEG score recompute
  19. 2026-09-23 19:57 UTCGHSA enrichment
  20. 2026-09-23 17:54 UTCEPSS rescore
  21. 2026-09-23 07:50 UTCGHSA enrichment
  22. 2026-09-22 19:42 UTCEG score recompute
  23. 2026-09-22 19:42 UTCGHSA enrichment
  24. 2026-09-22 16:01 UTCEPSS rescore
  25. 2026-09-22 07:34 UTCEG score recompute
  26. 2026-09-22 07:34 UTCGHSA enrichment
  27. 2026-09-21 21:09 UTCEPSS rescore
  28. 2026-09-21 19:25 UTCGHSA enrichment
  29. 2026-09-21 07:17 UTCEG score recompute
  30. 2026-09-21 07:16 UTCGHSA enrichment
  31. 2026-09-20 20:16 UTCEPSS rescore
  32. 2026-09-20 19:05 UTCGHSA enrichment
  33. 2026-09-20 06:57 UTCGHSA enrichment
  34. 2026-09-19 18:47 UTCEG score recompute
  35. 2026-09-19 18:47 UTCGHSA enrichment
  36. 2026-09-19 06:38 UTCEG score recompute
  37. 2026-09-19 06:38 UTCGHSA enrichment
  38. 2026-09-18 19:28 UTCEPSS rescore
  39. 2026-09-18 18:30 UTCEG score recompute
  40. 2026-09-18 18:30 UTCGHSA enrichment
  41. 2026-09-18 18:02 UTCEG score recompute▲ 7.00
  42. 2026-09-18 18:02 UTCGHSA enrichment
  43. 2026-09-18 17:59 UTCMITRE cvelistV5CVSS v3 → 7 · severity → HIGH
  44. 2026-09-17 17:24 UTCNVD update
  45. 2026-09-17 16:27 UTCEG score recompute
  46. 2026-09-17 16:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90353?
CVE-2026-90353 is a high vulnerability published on September 17, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix ext PHY use-after-free on register error path After mt7915registerext_phy() succeeded, a failure of the main PHY mt7915initdebugfs() or mt7915coredumpregister() unwound through freephy2, which called…
When was CVE-2026-90353 disclosed?
CVE-2026-90353 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-2026-90353 actively exploited?
CVE-2026-90353 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90353?
CVE-2026-90353 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90353?
No fix for CVE-2026-90353 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-2026-90353 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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