Bug 2536812 (CVE-2026-90370) - CVE-2026-90370 kernel: wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config
Summary: CVE-2026-90370 kernel: wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_c...
Keywords:
Status: NEW
Alias: CVE-2026-90370
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 19:36 UTC by OSIDB Bzimport
Modified: 2026-10-20 10:56 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-09-17 19:36:25 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config

The response TLV loop advanced by tlv->len without a minimum, so a
theoretical firmware response containing a zero-length TLV could spin
forever, hanging the CPU during device probe.
The u32 payload was also read without bounds checking.
Reject a short fixed field, stop on a TLV whose length underruns the
header or overruns the skb.


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