Bug 2516850 (CVE-2026-74340) - CVE-2026-74340 kernel: wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication
Summary: CVE-2026-74340 kernel: wifi: wcn36xx: fix OOB read from firmware count in PRI...
Keywords:
Status: NEW
Alias: CVE-2026-74340
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: 2026-08-15 06:36 UTC by OSIDB Bzimport
Modified: 2026-08-20 18:04 UTC (History)
2 users (show)

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


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Description OSIDB Bzimport 2026-08-15 06:36:43 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication

The firmware-controlled rsp->count field is used as the loop bound for
indexing into the flexible rsp->regs[] array without validation against
the message length. A count exceeding the actual data causes out-of-
bounds reads from the heap-allocated message buffer.

Add a check that count fits within the received message.


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