CVE-2026-90379

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. 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 mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.8Exploit: 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: mt7921: Add PCIe AER handler support to prevent system crash

When an AER error occurs and the bus is hung, the register reads return 0xFFFFFFFF, causing the DMA queue state to be corrupted and resulting in an invalid memory access when accessing q->desc[] or q->entry[].

Unable to handle kernel paging request at virtual address ffffffc01099eac0 pc : mt76_dma_add_buf+0x124/0x188 [mt76] lr : mt76_dma_rx_fill+0x11c/0x1d8 [mt76] sp : ffffffc016d9bbf0 x29: ffffffc016d9bc10 x28: 0000000000000000 x27: 0000000000000000 x26: ffffffb7855e50b8 x25: ffffffb80d04f000 x24: 0000000000000000 x23: 0000000000000ec0 x22: ffffffb796803648 x21: ffffffb796801f80 x20: ffffffb7968035f8 x19: 0000000000000ec0 x18: 0000000000000000 x17: 000000004ec00000 x16: 000000000ec00000 x15: ffffffc01099eac0 x14: 000000004ec00000 x13: 00000000ffc5a000 x12: ffffffc016d9bc32 x11: 00000000ffffffff x10: 0000000000000002 x9 : 0000000000000000 x8 : 000000000000b4ac x7 : 0000000000000a20 x6 : ffffffb6c1806400 x5 : 0000000000000000 x4 : ffffffb80d04f000 x3 : 0000000000000000 x2 : 0000000000000001 x1 : 000000000ec04000 x0 : ffffffb7968035f8 Call trace: mt76_dma_add_buf+0x124/0x188 [mt76 (HASH:1029 4)] mt76_dma_rx_reset+0xe8/0xfc [mt76 (HASH:1029 4)] mt7921_wpdma_reset+0x188/0x1b0 [mt7921e (HASH:ee48 5)] mt7921e_mac_reset+0x128/0x418 [mt7921e (HASH:ee48 5)] mt7921_mac_reset_work+0xac/0x1a8 [mt7921_common (HASH:f721 6)] process_one_work+0x188/0x514 worker_thread+0x12c/0x300 kthread+0x140/0x1fc ret_from_fork+0x10/0x30

Fix the invalid memory access by validating the DMA index read from the hardware before it is used as a queue index. An out-of-range value, such as the 0xFFFFFFFF returned while the bus is hung, is now clamped so it can no longer corrupt q->head or q->tail. In addition, check the bus_hung flag in mt7921_mac_reset_work() before attempting the reset sequence, reject MCU messages while the bus is hung, and install no-op bus operations when an unrecoverable AER error is detected, preventing further invalid hardware accesses.

Due to hardware limitations - such as the lack of a connected hardware reset pin or the absence of host re-probe functionality - affected Wi-Fi devices may not fully recover to a normal operational state after certain errors, even with AER enabled.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
44
EG Risk 44/100CISA 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
Severity88% × 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
0.4%
EPSS %ILE
29th
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

wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/915672c5ae32deeb72f4572856d123f314791136
generic

wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f544bcba4721e1074e9bc6666f0ef4f8b96ddba8
generic

wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/670b3dc4e3713542a9f002d38fb9d1740b9e342b

Vendor Advisories for CVE-2026-90379(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
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 40× in last 7d / 107× 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.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-10-05 02:32 UTCEG score recompute
  2. 2026-10-05 02:32 UTCVendor advisory
  3. 2026-10-05 02:32 UTCGHSA enrichment
  4. 2026-10-04 23:22 UTCEPSS rescore
  5. 2026-10-04 15:28 UTCVendor advisory
  6. 2026-10-04 15:28 UTCGHSA enrichment
  7. 2026-10-04 04:23 UTCVendor advisory
  8. 2026-10-04 04:23 UTCGHSA enrichment
  9. 2026-10-03 17:20 UTCEG score recompute
  10. 2026-10-03 17:20 UTCVendor advisory
  11. 2026-10-03 17:20 UTCGHSA enrichment
  12. 2026-10-03 06:15 UTCVendor advisory
  13. 2026-10-03 06:15 UTCGHSA enrichment
  14. 2026-10-02 19:10 UTCEG score recompute
  15. 2026-10-02 19:10 UTCVendor advisory
  16. 2026-10-02 19:10 UTCGHSA enrichment
  17. 2026-10-02 08:05 UTCVendor advisory
  18. 2026-10-02 08:05 UTCGHSA enrichment
  19. 2026-10-01 21:01 UTCEG score recompute
  20. 2026-10-01 21:01 UTCVendor advisory
  21. 2026-10-01 21:01 UTCGHSA enrichment
  22. 2026-10-01 19:51 UTCEPSS rescore
  23. 2026-10-01 09:56 UTCVendor advisory
  24. 2026-10-01 09:56 UTCGHSA enrichment
  25. 2026-09-30 22:52 UTCEG score recompute
Show 75 more
  1. 2026-09-30 22:52 UTCVendor advisory
  2. 2026-09-30 22:52 UTCGHSA enrichment
  3. 2026-09-30 15:04 UTCEPSS rescore
  4. 2026-09-30 11:48 UTCVendor advisory
  5. 2026-09-30 11:48 UTCGHSA enrichment
  6. 2026-09-30 00:43 UTCEG score recompute
  7. 2026-09-30 00:43 UTCVendor advisory
  8. 2026-09-30 00:43 UTCGHSA enrichment
  9. 2026-09-29 09:18 UTCVendor advisory
  10. 2026-09-29 09:18 UTCGHSA enrichment
  11. 2026-09-28 22:14 UTCEG score recompute
  12. 2026-09-28 22:14 UTCVendor advisory
  13. 2026-09-28 22:14 UTCGHSA enrichment
  14. 2026-09-28 13:52 UTCEPSS rescore
  15. 2026-09-28 13:52 UTCEPSS rescore
  16. 2026-09-28 11:04 UTCVendor advisory
  17. 2026-09-28 11:04 UTCGHSA enrichment
  18. 2026-09-28 00:00 UTCEG score recompute
  19. 2026-09-28 00:00 UTCVendor advisory
  20. 2026-09-28 00:00 UTCGHSA enrichment
  21. 2026-09-27 13:49 UTCEPSS rescore
  22. 2026-09-27 12:55 UTCVendor advisory
  23. 2026-09-27 12:55 UTCGHSA enrichment
  24. 2026-09-27 01:51 UTCEG score recompute
  25. 2026-09-27 01:51 UTCVendor advisory
  26. 2026-09-27 01:51 UTCGHSA enrichment
  27. 2026-09-26 15:59 UTCEPSS rescore
  28. 2026-09-26 14:43 UTCVendor advisory
  29. 2026-09-26 14:43 UTCGHSA enrichment
  30. 2026-09-26 03:39 UTCEG score recompute
  31. 2026-09-26 03:39 UTCVendor advisory
  32. 2026-09-26 03:39 UTCGHSA enrichment
  33. 2026-09-25 16:34 UTCVendor advisory
  34. 2026-09-25 16:34 UTCGHSA enrichment
  35. 2026-09-25 05:30 UTCVendor advisory
  36. 2026-09-25 05:30 UTCGHSA enrichment
  37. 2026-09-24 18:26 UTCEG score recompute
  38. 2026-09-24 18:26 UTCVendor advisory
  39. 2026-09-24 18:26 UTCGHSA enrichment
  40. 2026-09-24 14:04 UTCEPSS rescore
  41. 2026-09-24 07:21 UTCVendor advisory
  42. 2026-09-24 07:21 UTCGHSA enrichment
  43. 2026-09-23 20:17 UTCEG score recompute
  44. 2026-09-23 20:17 UTCVendor advisory
  45. 2026-09-23 20:17 UTCGHSA enrichment
  46. 2026-09-23 17:54 UTCEPSS rescore
  47. 2026-09-23 09:13 UTCVendor advisory
  48. 2026-09-23 09:13 UTCGHSA enrichment
  49. 2026-09-22 22:09 UTCEG score recompute
  50. 2026-09-22 22:09 UTCVendor advisory
  51. 2026-09-22 22:09 UTCGHSA enrichment
  52. 2026-09-22 16:01 UTCEPSS rescore
  53. 2026-09-22 11:05 UTCVendor advisory
  54. 2026-09-22 11:04 UTCGHSA enrichment
  55. 2026-09-22 00:00 UTCEG score recompute
  56. 2026-09-22 00:00 UTCVendor advisory
  57. 2026-09-22 00:00 UTCGHSA enrichment
  58. 2026-09-21 21:09 UTCEPSS rescore
  59. 2026-09-21 12:56 UTCVendor advisory
  60. 2026-09-21 12:56 UTCGHSA enrichment
  61. 2026-09-21 01:52 UTCEG score recompute
  62. 2026-09-21 01:52 UTCVendor advisory
  63. 2026-09-21 01:52 UTCGHSA enrichment
  64. 2026-09-20 20:16 UTCEPSS rescore
  65. 2026-09-20 14:47 UTCVendor advisory
  66. 2026-09-20 14:47 UTCGHSA enrichment
  67. 2026-09-20 03:43 UTCVendor advisory
  68. 2026-09-20 03:43 UTCGHSA enrichment
  69. 2026-09-19 16:39 UTCEG score recompute
  70. 2026-09-19 16:39 UTCVendor advisory
  71. 2026-09-19 16:39 UTCGHSA enrichment
  72. 2026-09-19 05:34 UTCEG score recompute
  73. 2026-09-19 05:34 UTCGHSA enrichment
  74. 2026-09-18 19:28 UTCEPSS rescore
  75. 2026-09-18 18:30 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-90379?
CVE-2026-90379 is a high vulnerability published on September 17, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash When an AER error occurs and the bus is hung, the register reads return 0xFFFFFFFF, causing the DMA queue state to be corrupted and resulting in an invalid…
When was CVE-2026-90379 disclosed?
CVE-2026-90379 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-2026-90379 actively exploited?
CVE-2026-90379 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90379?
CVE-2026-90379 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90379?
No fix for CVE-2026-90379 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-2026-90379 are linked in the Vendor Advisories panel on this page.

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