openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix out of bound read in libziparchive am: d9fd1863f4 am: 6908996434 am: 25c0d68d29 am: ed33065bfc am: bc8c8e4b56 am: afddaba0cc am: 0b1ad23070 am: d4b4f0a1e1 am: 2aea56db64 

am: e170e3876b

Change-Id: Iac304390346cd933d1bb67d81f0352d22f5b6b43
This commit is contained in:
Tianjie Xu 2017-04-11 20:20:01 +00:00 committed by android-build-merger
parent 9a43accb26 e170e3876b
commit 364c9f964a
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libziparchive/zip_archive.cc
View File

@ -386,6 +386,14 @@ static int32_t ParseZipArchive(ZipArchive* archive) {
const uint8_t* const cd_end = cd_ptr + cd_length;
const uint8_t* ptr = cd_ptr;
for (uint16_t i = 0; i < num_entries; i++) {
if (ptr > cd_end - sizeof(CentralDirectoryRecord)) {
ALOGW("Zip: ran off the end (at %" PRIu16 ")", i);
#if defined(__ANDROID__)
android_errorWriteLog(0x534e4554, "36392138");
#endif
return -1;
}
const CentralDirectoryRecord* cdr =
reinterpret_cast<const CentralDirectoryRecord*>(ptr);
if (cdr->record_signature != CentralDirectoryRecord::kSignature) {
@ -393,11 +401,6 @@ static int32_t ParseZipArchive(ZipArchive* archive) {
return -1;
}
if (ptr + sizeof(CentralDirectoryRecord) > cd_end) {
ALOGW("Zip: ran off the end (at %" PRIu16 ")", i);
return -1;
}
const off64_t local_header_offset = cdr->local_file_header_offset;
if (local_header_offset >= archive->directory_offset) {
ALOGW("Zip: bad LFH offset %" PRId64 " at entry %" PRIu16,