Bug 2423909 (CVE-2025-14956) - CVE-2025-14956 binaryen: heap-based buffer overflow in WasmBinaryReader::readExpression() when parsing a malformed WebAssembly binary
Summary: CVE-2025-14956 binaryen: heap-based buffer overflow in WasmBinaryReader::read...
Keywords:
Status: NEW
Alias: CVE-2025-14956
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:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-19 17:01 UTC by OSIDB Bzimport
Modified: 2025-12-19 19:42 UTC (History)
0 users

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Description OSIDB Bzimport 2025-12-19 17:01:24 UTC 
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
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