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poc-segv-in-tflite-invoke-id000805sig06src006413time37862019

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SEGV in tflite-invoke (id:000805,sig:06,src:006413,time:37862019,execs:12157451,op:havoc,rep:2)

Severity: medium CWE: CWE-119 Target: tflite-invoke Generated: 2026-02-27

Summary

SEGV in tflite-invoke (id:000805,sig:06,src:006413,time:37862019,execs:12157451,op:havoc,rep:2). See ASAN output below for details.

Reproduction

chmod +x reproduce.sh
./reproduce.sh

Or manually:

# Build target with ASAN
# Run: <target> poc.tflite

PoC File

poc.tflite (1984 bytes)

ASAN Output

/home/lab/huntr/targets/tflite/build-afl/cpuinfo/src/linux/multiline.c:64:9: runtime error: call to function parse_line through pointer to incorrect function type 'bool (*)(const char *, const char *, void *, unsigned long)'
/home/lab/huntr/targets/tflite/build-afl/cpuinfo/src/x86/linux/cpuinfo.c:87: note: parse_line defined here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/build-afl/cpuinfo/src/linux/multiline.c:64:9 in 
INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
/home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/dequantize.cc:68:22: runtime error: member access within null pointer of type 'TfLiteTensor'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/dequantize.cc:68:22 in 
/home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/dequantize.cc:68:22: runtime error: store to null pointer of type 'TfLiteType'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/dequantize.cc:68:22 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1304702==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x574addf949da bp 0x7ffc02988a80 sp 0x7ffc02988a40 T0)
==1304702==The signal is caused by a WRITE memory access.
==1304702==Hint: address points to the zero page.
    #0 0x574addf949da in tflite::ops::builtin::dequantize::Prepare(TfLiteContext*, TfLiteNode*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/dequantize.cc:68:27
    #1 0x574add6e5e4f in tflite::Subgraph::PrepareOpsStartingAt(int, std::vector<int, std::allocator<int>> const&, int*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:1508:44
    #2 0x574add6fbfbb in tflite::Subgraph::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2307:5
    #3 0x574add700123 in tflite::Subgraph::ModifyGraphWithDelegate(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2260:17
    #4 0x574add632e26 in tflite::impl::Interpreter::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:410:24
    #5 0x574add62adb9 in TfLiteStatus tflite::impl::Interpreter::ModifyGraphWithDelegateImpl<TfLiteDelegate, void (*)(TfLiteDelegate*)>(std::unique_ptr<TfLiteDelegate, void (*)(TfLiteDelegate*)>&&) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.h:861:12
    #6 0x574add62adb9 in tflite::impl::Interpreter::ApplyLazyDelegateProviders() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:346:19
    #7 0x574add62a17f in tflite::impl::Interpreter::AllocateTensors() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:192:7
    #8 0x574add5ac476 in LLVMFuzzerTestOneInput /home/lab/huntr/harnesses/tflite/fu

Impact

Memory corruption vulnerability reachable by processing a malformed tflite-invoke file. An attacker could craft a malicious file and distribute it to cause denial of service or potentially leak sensitive heap data.

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