Bug 2348569 (CVE-2025-21734) - CVE-2025-21734 kernel: misc: fastrpc: Fix copy buffer page size
Summary: CVE-2025-21734 kernel: misc: fastrpc: Fix copy buffer page size
Keywords:
Status: NEW
Alias: CVE-2025-21734
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: 2025-02-27 03:03 UTC by OSIDB Bzimport
Modified: 2025-02-27 18:39 UTC (History)
4 users (show)

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


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Description OSIDB Bzimport 2025-02-27 03:03:34 UTC
In the Linux kernel, the following vulnerability has been resolved:

misc: fastrpc: Fix copy buffer page size

For non-registered buffer, fastrpc driver copies the buffer and
pass it to the remote subsystem. There is a problem with current
implementation of page size calculation which is not considering
the offset in the calculation. This might lead to passing of
improper and out-of-bounds page size which could result in
memory issue. Calculate page start and page end using the offset
adjusted address instead of absolute address.


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