Bug 2559630 (CVE-2026-98958) - CVE-2026-98958 kernel: wifi: mt76: account non-AQL frames per peer rather than per link
Summary: CVE-2026-98958 kernel: wifi: mt76: account non-AQL frames per peer rather tha...
Keywords:
Status: NEW
Alias: CVE-2026-98958
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: 2026-10-23 12:46 UTC by OSIDB Bzimport
Modified: 2026-10-27 15:15 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-10-23 12:46:09 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: account non-AQL frames per peer rather than per link

The driver increments wcid->non_aql_packets when a frame goes to the
hardware queue. The completion path decrements the counter again.

For an MLO peer, the hardware reports the completion on the link that it
used for the transmission. This link can differ from the link that the
driver queued the frame on. In that case, the increment and the
decrement go to different link wcids, and the count drifts upwards until
it blocks the station.

Keep the count on the wcid of the primary link, like the other peer-wide
state.


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