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ignore number_entry_cd when recover

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This commit is contained in:
Cœur 2024-11-13 06:05:40 +01:00
parent d7f5fdd19a
commit fa920de64b
3 changed files with 4 additions and 1 deletions
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2
compat/unzip.c
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@ -137,6 +137,8 @@ unzFile unzOpen_MZ(void *stream) {
if (!handle)
return NULL;
mz_zip_set_recover(handle, 1);
err = mz_zip_open(handle, stream, MZ_OPEN_MODE_READ);
if (err != MZ_OK) {
mz_zip_delete(&handle);

3
mz_zip.c
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@ -980,7 +980,8 @@ static int32_t mz_zip_read_cd(void *handle) {
if (err == MZ_OK)
err = mz_stream_read_uint16(zip->stream, &value16);
number_entry_cd = value16;
if (number_entry_cd != zip->number_entry)
/* When recover is enabled, we can ignore incorrect number of entries */
if (number_entry_cd != zip->number_entry && !zip->recover)
err = MZ_FORMAT_ERROR;
/* Size of the central directory */
if (err == MZ_OK)

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test/fuzz/unzip_fuzzer_seed_corpus/incorrect_number_entries.zip Normal file
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