Bug 2501257

Summary: CVE-2026-50144 ncnn: ncnn: Out-of-bounds write allows arbitrary code execution [fedora-all]
Product: [Fedora] Fedora Reporter: Marian Rehak <mrehak>
Component: ncnnAssignee: Felix Wang <topazus>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: 45CC: topazus
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["dee63321-1e85-457c-b9ee-bea35fb253f0"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2501175    

Description Marian Rehak 2026-07-16 08:01:17 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

ncnn is a high-performance neural network inference framework optimized for the mobile platform. In commit e54f7b1f88434e1d844ea0551b880a1cfb079ce1 and earlier, ncnn allows an out-of-bounds heap write in ncnn::ParamDict::load_param() when Net::load_param() loads a malicious .param model file because the parsed parameter id is checked only against id >= NCNN_MAX_PARAM_COUNT, allowing a negative id to index before the params[NCNN_MAX_PARAM_COUNT] array. This vulnerability is fixed by commit 5a0288f255daa6c3294f77109f67718e434ec020.
Comment 1 Aoife Moloney 2026-08-17 15:20:48 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.