Bug 2536327 (CVE-2026-90371) - CVE-2026-90371 kernel: wifi: mt76: fix RXDMAD_C buffer recycling race
Summary: CVE-2026-90371 kernel: wifi: mt76: fix RXDMAD_C buffer recycling race
Keywords:
Status: NEW
Alias: CVE-2026-90371
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 17:23 UTC by OSIDB Bzimport
Modified: 2026-10-20 10:56 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-09-17 17:23:05 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: fix RXDMAD_C buffer recycling race

The RXDMAD_C buffers come from the RRO data queues' page pools, which are
bound to a different NAPI, so the direct page-pool recycle used here could
race the owning NAPI; take the non-direct path as is already done for WED
RX queues.
Comment 1 gkamathe 2026-09-22 08:57:32 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90371.mbox
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