Bug 2315212 (CVE-2024-46860)

Summary: CVE-2024-46860 kernel: wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2315243    
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Description OSIDB Bzimport 2024-09-27 13:23:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change

When disabling wifi mt7921_ipv6_addr_change() is called as a notifier.
At this point mvif->phy is already NULL so we cannot use it here.
Comment 1 Robb Gatica 2024-09-27 14:32:21 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024092744-CVE-2024-46860-1dfc@gregkh/T