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Limit memory used for JPEG decompression during fuzzing

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This commit is contained in:
m-holger 2024-06-28 19:38:52 +01:00
parent 6ed2880405
commit c93b149b4d
3 changed files with 13 additions and 1 deletions
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4
CMakeLists.txt
View File

@ -131,6 +131,10 @@ if(FUTURE)
add_compile_definitions(QPDF_FUTURE=1)
endif()
if(OSS_FUZZ)
add_compile_definitions(QPDF_OSS_FUZZ=1)
endif()
enable_testing()
set(RUN_QTEST perl ${qpdf_SOURCE_DIR}/run-qtest ${ENABLE_QTC_ARG})

2
job.sums
View File

@ -1,5 +1,5 @@
# Generated by generate_auto_job
CMakeLists.txt 47752f33b17fa526d46fc608a25ad6b8c61feba9deb1bd659fddf93e6e08b102
CMakeLists.txt 456938b9debc4997f142ccfb13f3baf2517ae5855e1fe9b2ada1a0b8f7e4facf
generate_auto_job f64733b79dcee5a0e3e8ccc6976448e8ddf0e8b6529987a66a7d3ab2ebc10a86
include/qpdf/auto_job_c_att.hh 4c2b171ea00531db54720bf49a43f8b34481586ae7fb6cbf225099ee42bc5bb4
include/qpdf/auto_job_c_copy_att.hh 50609012bff14fd82f0649185940d617d05d530cdc522185c7f3920a561ccb42

8
libqpdf/Pl_DCT.cc
View File

@ -310,6 +310,14 @@ Pl_DCT::decompress(void* cinfo_p, Buffer* b)
jpeg_create_decompress(cinfo);
#if ((defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406) || defined(__clang__))
# pragma GCC diagnostic pop
#endif
#ifdef QPDF_OSS_FUZZ
// Limit the memory used to decompress JPEG files during fuzzing. Excessive memory use during
// fuzzing is due to corrupt JPEG data which sometimes cannot be detected before
// jpeg_start_decompress is called. During normal use of qpdf very large JPEGs can occasionally
// occur legitimately and therefore must be allowed during normal operations.
cinfo->mem->max_memory_to_use = 1'000'000'000;
#endif
jpeg_buffer_src(cinfo, b);