Bug 2517640 (CVE-2026-63409) - CVE-2026-63409 Deskflow: Deskflow: Client crash due to out-of-bounds read
Summary: CVE-2026-63409 Deskflow: Deskflow: Client crash due to out-of-bounds read
Keywords:
Status: NEW
Alias: CVE-2026-63409
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2521881 2521882
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-17 21:11 UTC by OSIDB Bzimport
Modified: 2026-08-24 13:23 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-08-17 21:11:33 UTC 
Deskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.296, a malicious Deskflow server can send an odd-length DSOP vector to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp, causing the missing value after the final option key to be read beyond the vector during the PacketStreamFilter::filterEvent to ServerProxy::handleData() to ServerProxy::parseHandshakeMessage() call chain and crash the connected client. This issue is fixed in continuous build 1.26.0.296.
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