Bug 2567652 (CVE-2026-122189)

Summary: CVE-2026-122189 ppl.nn: ppl.nn: Denial of Service via out-of-bounds read in CUDA optimizer
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in ppl.nn. An out-of-bounds read vulnerability in the CUDA optimizer allows a remote attacker to cause a Denial of Service (DoS) or disclose sensitive memory contents by providing manipulated quantization parameters. When the application processes crafted inputs during quantization initialization, it reads memory beyond allocated buffer boundaries, leading to an application crash or unauthorized data disclosure.
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Description OSIDB Bzimport 2026-11-05 22:15:09 UTC 
A vulnerability has been found in OpenPPL ppl.nn up to bb84dc9952809b3a5a0036858a3d9f68af1c83d5. The affected element is the function OptGraph::InitQuantization of the file src/ppl/nn/engines/cuda/optimizer/opt_graph.cc of the component CUDA Optimizer. Such manipulation of the argument per_channel/bit_width/tensor_max/tensor_min/scale leads to out-of-bounds read. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.