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SEGV in tflite-xnnpack (id:002050,sig:11,src:014875,time:389303304,execs:801540110,op:havoc,rep:2)
Severity: medium CWE: CWE-119 Target: tflite-xnnpack Generated: 2026-02-27
Summary
SEGV in tflite-xnnpack (id:002050,sig:11,src:014875,time:389303304,execs:801540110,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(612 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/atan2.cc:47:3: runtime error: member access within null pointer of type 'TfLiteTensor'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/atan2.cc:47:3 in
/home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/atan2.cc:47:3: runtime error: load of null pointer of type 'TfLiteType'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/atan2.cc:47:3 in
AddressSanitizer:DEADLYSIGNAL
=================================================================
==532496==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x64b4044966da bp 0x7ffe067557a0 sp 0x7ffe06755750 T0)
==532496==The signal is caused by a READ memory access.
==532496==Hint: address points to the zero page.
#0 0x64b4044966da in tflite::ops::builtin::atan2::Atan2Prepare(TfLiteContext*, TfLiteNode*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/atan2.cc
#1 0x64b40427e02f 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 0x64b40429419b in tflite::Subgraph::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2307:5
#3 0x64b404298303 in tflite::Subgraph::ModifyGraphWithDelegate(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:2260:17
#4 0x64b4041cb006 in tflite::impl::Interpreter::ModifyGraphWithDelegateImpl(TfLiteDelegate*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:410:24
#5 0x64b404210375 in tflite::impl::InterpreterBuilder::ApplyDelegates(tflite::impl::Interpreter*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter_builder.cc:729:5
#6 0x64b404217456 in tflite::impl::InterpreterBuilder::operator()(std::unique_ptr<tflite::impl::Interpreter, std::default_delete<tflite::impl::Interpreter>>*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter_builder.cc:899:25
#7 0x64b404144332 in LLVMFuzzerTestOneInput /home/lab/huntr/harnesses/tflite/fuzz_tflite_xnnpack_v2.cpp:21:9
#8 0x64b40414380a
Impact
Memory corruption vulnerability reachable by processing a malformed tflite-xnnpack 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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