# SEGV in tflite-invoke (id:000436,sig:06,src:020172,time:17079608,execs:3153297,op:colorization,rep:1)

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

## Summary

SEGV in tflite-invoke (id:000436,sig:06,src:020172,time:17079608,execs:3153297,op:colorization,rep:1). See ASAN output below for details.

## Reproduction

```bash
chmod +x reproduce.sh
./reproduce.sh
```

Or manually:
```bash
# Build target with ASAN
# Run: <target> poc.tflite
```

## PoC File

- `poc.tflite` (496 bytes)

## ASAN Output

```
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/build-afl/cpuinfo/src/linux/multiline.c:85:11 in 
/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/kernel_util.h:204:18: runtime error: member access within null pointer of type 'const TfLiteTensor'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/kernel_util.h:204:18 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==500775==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000020 (pc 0x63010e056857 bp 0x7ffc3e5855c0 sp 0x7ffc3e5854e0 T0)
==500775==The signal is caused by a READ memory access.
==500775==Hint: address points to the zero page.
    #0 0x63010e056857 in tflite::IsConstantOrPersistentTensor(TfLiteTensor const*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/kernel_util.h
    #1 0x63010e056857 in tflite::ops::builtin::reshape::Prepare(TfLiteContext*, TfLiteNode*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/reshape.cc:162:11
    #2 0x63010d067e4f 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
    #3 0x63010d07dfbb in tflite::Subgraph::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2307:5
    #4 0x63010d082123 in tflite::Subgraph::ModifyGraphWithDelegate(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2260:17
    #5 0x63010cfb4e26 in tflite::impl::Interpreter::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:410:24
    #6 0x63010cfacdb9 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
    #7 0x63010cfacdb9 in tflite::impl::Interpreter::ApplyLazyDelegateProviders() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:346:19
    #8 0x63010cfac17f in tflite::impl::Interpreter::AllocateTensors() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:192:7
    #9 0x63010cf2e476 in LLVMFuzzerTestOneInput /home/lab/huntr/harness
```

## 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.