shithub: libvpx

Download patch

ref: b3a262dff3a3083cf6232a68b7c18be92b4cc7c0
parent: e50ea014c3d41652df34ed1325511803268e2ca7
parent: 45daecb4f73a47ab3236a29a3a48c52324cbf19a
author: James Zern <jzern@google.com>
date: Thu Jun 8 19:17:49 EDT 2017

Merge "vp8_decode_frame: fix oob read on truncated key frame"

--- a/test/invalid_file_test.cc
+++ b/test/invalid_file_test.cc
@@ -120,6 +120,15 @@
 
 TEST_P(InvalidFileTest, ReturnCode) { RunTest(); }
 
+#if CONFIG_VP8_DECODER
+const DecodeParam kVP8InvalidFileTests[] = {
+  { 1, "invalid-bug-1443.ivf" },
+};
+
+VP8_INSTANTIATE_TEST_CASE(InvalidFileTest,
+                          ::testing::ValuesIn(kVP8InvalidFileTests));
+#endif  // CONFIG_VP8_DECODER
+
 #if CONFIG_VP9_DECODER
 const DecodeParam kVP9InvalidFileTests[] = {
   { 1, "invalid-vp90-02-v2.webm" },
@@ -164,12 +173,12 @@
 TEST_P(InvalidFileInvalidPeekTest, ReturnCode) { RunTest(); }
 
 #if CONFIG_VP8_DECODER
-const DecodeParam kVP8InvalidFileTests[] = {
+const DecodeParam kVP8InvalidPeekTests[] = {
   { 1, "invalid-vp80-00-comprehensive-018.ivf.2kf_0x6.ivf" },
 };
 
 VP8_INSTANTIATE_TEST_CASE(InvalidFileInvalidPeekTest,
-                          ::testing::ValuesIn(kVP8InvalidFileTests));
+                          ::testing::ValuesIn(kVP8InvalidPeekTests));
 #endif  // CONFIG_VP8_DECODER
 
 #if CONFIG_VP9_DECODER
--- a/test/test-data.mk
+++ b/test/test-data.mk
@@ -732,6 +732,8 @@
 endif  # CONFIG_VP9_HIGHBITDEPTH
 
 # Invalid files for testing libvpx error checking.
+LIBVPX_TEST_DATA-$(CONFIG_VP8_DECODER) += invalid-bug-1443.ivf
+LIBVPX_TEST_DATA-$(CONFIG_VP8_DECODER) += invalid-bug-1443.ivf.res
 LIBVPX_TEST_DATA-$(CONFIG_VP8_DECODER) += invalid-vp80-00-comprehensive-018.ivf.2kf_0x6.ivf
 LIBVPX_TEST_DATA-$(CONFIG_VP8_DECODER) += invalid-vp80-00-comprehensive-018.ivf.2kf_0x6.ivf.res
 LIBVPX_TEST_DATA-$(CONFIG_VP9_DECODER) += invalid-vp90-01-v3.webm
--- a/test/test-data.sha1
+++ b/test/test-data.sha1
@@ -848,3 +848,5 @@
 6fa3d3ac306a3d9ce1d610b78441dc00d2c2d4b9 *tos_vp8.webm
 e402cbbf9e550ae017a1e9f1f73931c1d18474e8 *invalid-crbug-667044.webm
 d3964f9dad9f60363c81b688324d95b4ec7c8038 *invalid-crbug-667044.webm.res
+fd9df7f3f6992af1d7a9dde975c9a0d6f28c053d *invalid-bug-1443.ivf
+fd3020fa6e9ca5966206738654c97dec313b0a95 *invalid-bug-1443.ivf.res
--- a/vp8/decoder/decodeframe.c
+++ b/vp8/decoder/decodeframe.c
@@ -930,7 +930,7 @@
       /* When error concealment is enabled we should only check the sync
        * code if we have enough bits available
        */
-      if (!pbi->ec_active || data + 3 < data_end) {
+      if (data + 3 < data_end) {
         if (clear[0] != 0x9d || clear[1] != 0x01 || clear[2] != 0x2a) {
           vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM,
                              "Invalid frame sync code");
@@ -941,13 +941,19 @@
        * if we have enough data. Otherwise we will end up with the wrong
        * size.
        */
-      if (!pbi->ec_active || data + 6 < data_end) {
+      if (data + 6 < data_end) {
         pc->Width = (clear[3] | (clear[4] << 8)) & 0x3fff;
         pc->horiz_scale = clear[4] >> 6;
         pc->Height = (clear[5] | (clear[6] << 8)) & 0x3fff;
         pc->vert_scale = clear[6] >> 6;
+        data += 7;
+      } else if (!pbi->ec_active) {
+        vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
+                           "Truncated key frame header");
+      } else {
+        /* Error concealment is active, clear the frame. */
+        data = data_end;
       }
-      data += 7;
     } else {
       memcpy(&xd->pre, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG));
       memcpy(&xd->dst, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG));