Bug 2422744 (CVE-2025-68255) - CVE-2025-68255 kernel: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
Summary: CVE-2025-68255 kernel: staging: rtl8723bs: fix stack buffer overflow in OnAss...
Keywords:
Status: NEW
Alias: CVE-2025-68255
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: 2025-12-16 15:01 UTC by OSIDB Bzimport
Modified: 2025-12-16 23:20 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-12-16 15:01:28 UTC
In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing

The Supported Rates IE length from an incoming Association Request frame
was used directly as the memcpy() length when copying into a fixed-size
16-byte stack buffer (supportRate). A malicious station can advertise an
IE length larger than 16 bytes, causing a stack buffer overflow.

Clamp ie_len to the buffer size before copying the Supported Rates IE,
and correct the bounds check when merging Extended Supported Rates to
prevent a second potential overflow.

This prevents kernel stack corruption triggered by malformed association
requests.


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