Bug 2320277 (CVE-2024-47714)

Summary:	CVE-2024-47714 kernel: wifi: mt76: mt7996: use hweight16 to get correct tx antenna
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2320333
Bug Blocks:

Description OSIDB Bzimport 2024-10-21 13:07:42 UTC

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

wifi: mt76: mt7996: use hweight16 to get correct tx antenna

The chainmask is u16 so using hweight8 cannot get correct tx_ant.
Without this patch, the tx_ant of band 2 would be -1 and lead to the
following issue:
BUG: KASAN: stack-out-of-bounds in mt7996_mcu_add_sta+0x12e0/0x16e0 [mt7996e]

Comment 1 Robb Gatica 2024-10-21 14:55:55 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102119-CVE-2024-47714-f88b@gregkh/T