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SEGV in tflite-xnnpack (id:002059,sig:11,src:016226,time:397301035,execs:818499319,op:havoc,rep:2)
Severity: medium CWE: CWE-119 Target: tflite-xnnpack Generated: 2026-02-27
Summary
SEGV in tflite-xnnpack (id:002059,sig:11,src:016226,time:397301035,execs:818499319,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(1380 bytes)
ASAN Output
/home/lab/huntr/targets/tflite/build-afl/cpuinfo/src/linux/multiline.c:85:11: 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: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/core/subgraph.cc:337:21: runtime error: null pointer passed as argument 2, which is declared to never be null
/usr/include/string.h:44:28: note: nonnull attribute specified here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:337:21 in
/home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/assign_variable.cc:56:21: runtime error: load of null pointer of type 'int32_t' (aka 'int')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/assign_variable.cc:56:21 in
AddressSanitizer:DEADLYSIGNAL
=================================================================
==2388367==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x64329995d697 bp 0x7fffae094390 sp 0x7fffae094300 T0)
==2388367==The signal is caused by a READ memory access.
==2388367==Hint: address points to the zero page.
#0 0x64329995d697 in tflite::ops::builtin::assign_variable::Eval(TfLiteContext*, TfLiteNode*) /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/kernels/assign_variable.cc:56:21
#1 0x64329974e064 in tflite::Subgraph::InvokeImpl() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:1726:18
#2 0x64329974aec0 in tflite::Subgraph::Invoke() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/subgraph.cc:1619:17
#3 0x64329968ebb6 in tflite::impl::Interpreter::Invoke() /home/lab/huntr/targets/tflite/tf-src/tensorflow/lite/core/interpreter.cc:243:3
#4 0x64329960d749 in LLVMFuzzerTestOneInput /home/lab/huntr/harnesses/tflite/fuzz_tflite_xnnpack_v2.cpp:29:18
#5 0x64329960c80a in main (/home/lab/huntr/harnesses/tflite/fuzz_tflite_xnnpack_v2+0x9f880a) (BuildId: 379682ff8803bcfee7b5e3bcbfcfe3d55390c609)
#6 0x717a4902a1c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#7 0x717a4902a28a in __libc_start_main csu
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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