Bug 2405135 (CVE-2025-11680) - CVE-2025-11680 libwebsockets: Out-of-bounds Write in libwebsockets PNG parsing
Summary: CVE-2025-11680 libwebsockets: Out-of-bounds Write in libwebsockets PNG parsing
Keywords:
Status: NEW
Alias: CVE-2025-11680
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2405258 2405259 2405260 2405261 2405262
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-20 17:23 UTC by OSIDB Bzimport
Modified: 2025-10-21 00:41 UTC (History)
11 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-10-20 17:23:58 UTC 
Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.
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