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Commit 398adf9b authored by Tianjie Xu's avatar Tianjie Xu Committed by android-build-merger
Browse files

Fix out of bound access in libziparchive am: 1ee4892e am: c24dd976 am: 87885912 

am: 167562aa

Change-Id: Icb066cdaf63d87324c6eca8b5b45dbc23235aaa2
parents 7d106d59 167562aa

libziparchive/zip_archive.cc

+6 −1
Original line number Diff line number Diff line
@@ -463,9 +463,14 @@ static int32_t MapCentralDirectory0(int fd, const char* debug_file_name, 
   * Grab the CD offset and size, and the number of entries in the

   * archive and verify that they look reasonable.

   */

  if (eocd->cd_start_offset + eocd->cd_size > eocd_offset) {

  if (static_cast<off64_t>(eocd->cd_start_offset) + eocd->cd_size > eocd_offset) {

    ALOGW("Zip: bad offsets (dir %" PRIu32 ", size %" PRIu32 ", eocd %" PRId64 ")",

        eocd->cd_start_offset, eocd->cd_size, static_cast<int64_t>(eocd_offset));

#if defined(__ANDROID__)

    if (eocd->cd_start_offset + eocd->cd_size <= eocd_offset) {

      android_errorWriteLog(0x534e4554, "31251826");

    }

#endif

    return kInvalidOffset;

  }

  if (eocd->num_records == 0) {