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CVE-2026-90379

8.8 · HIGH

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 regi…

Published Sep 17, 2026EPSS 0.38%

Overview

CVE-2026-90379 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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 :

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/670b3dc4e3713542a9f002d38fb9d1740b9e342bRefgit.kernel.org/stable/c/915672c5ae32deeb72f4572856d123f314791136Refgit.kernel.org/stable/c/f544bcba4721e1074e9bc6666f0ef4f8b96ddba8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90379?

CVE-2026-90379 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-90379?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-90379?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-90379?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90379 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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