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chore: cherry-pick 013961609785 from chromium (#42068)

* chore: cherry-pick 013961609785 from chromium

* chore: update patches

---------

Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>
Keeley Hammond 11 months ago
parent
commit
65e87cb8a4
2 changed files with 140 additions and 0 deletions
  1. 1 0
      patches/chromium/.patches
  2. 139 0
      patches/chromium/cherry-pick-013961609785.patch

+ 1 - 0
patches/chromium/.patches

@@ -130,3 +130,4 @@ fix_suppress_clang_-wimplicit-const-int-float-conversion_in.patch
 fix_getcursorscreenpoint_wrongly_returns_0_0.patch
 fix_add_support_for_skipping_first_2_no-op_refreshes_in_thumb_cap.patch
 refactor_expose_file_system_access_blocklist.patch
+cherry-pick-013961609785.patch

+ 139 - 0
patches/chromium/cherry-pick-013961609785.patch

@@ -0,0 +1,139 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: John Stiles <[email protected]>
+Date: Thu, 28 Mar 2024 00:51:13 +0000
+Subject: Detect overflow in JPEG image size calculations.
+
+Bug: 330756841
+Change-Id: Ib30493152e08fd2347f76de276c5805d6fef9a7d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5402199
+Commit-Queue: John Stiles <[email protected]>
+Reviewed-by: Daniel Cheng <[email protected]>
+Cr-Commit-Position: refs/heads/main@{#1279376}
+
+diff --git a/ui/gfx/codec/jpeg_codec.cc b/ui/gfx/codec/jpeg_codec.cc
+index a4de17094e69b36bb2c34b3b4f70eece9c088cc3..595966d724146df33701b1225e659ec085ca115b 100644
+--- a/ui/gfx/codec/jpeg_codec.cc
++++ b/ui/gfx/codec/jpeg_codec.cc
+@@ -6,10 +6,12 @@
+ 
+ #include <setjmp.h>
+ 
++#include <climits>
+ #include <memory>
+ #include <ostream>
+ 
+ #include "base/notreached.h"
++#include "base/numerics/checked_math.h"
+ #include "third_party/skia/include/core/SkBitmap.h"
+ #include "third_party/skia/include/core/SkColorPriv.h"
+ #include "ui/gfx/codec/vector_wstream.h"
+@@ -244,16 +246,27 @@ bool JPEGCodec::Decode(const unsigned char* input, size_t input_size,
+ 
+   jpeg_start_decompress(cinfo.get());
+ 
+-  // FIXME(brettw) we may want to allow the capability for callers to request
+-  // how to align row lengths as we do for the compressor.
+-  int row_read_stride = cinfo->output_width * cinfo->output_components;
++  // Confirm that the image width * height * component-size fits within an int.
++  // Note that image width and height are unsigned ints (JDIMENSION) in memory,
++  // but the file format only holds a uint16.
++  base::CheckedNumeric<size_t> checked_output_size = cinfo->output_width;
++  checked_output_size *= cinfo->output_components;
+ 
+-  // Create memory for a decoded image and write decoded lines to the memory
+-  // without conversions same as JPEGCodec::Encode().
+-  int row_write_stride = row_read_stride;
+-  output->resize(row_write_stride * cinfo->output_height);
++  // This shouldn't ever overflow a `size_t`; it's multiplying a uint16 by four.
++  size_t row_write_stride = checked_output_size.ValueOrDie();
+ 
+-  for (int row = 0; row < static_cast<int>(cinfo->output_height); row++) {
++  // Extremely large JPEGs could overflow here if `size_t` is 32 bits.
++  checked_output_size *= cinfo->output_height;
++  size_t output_size = checked_output_size.ValueOrDefault(INT_MAX);
++  if (output_size >= INT_MAX) {
++    return false;
++  }
++
++  // Create memory for a decoded image.
++  output->resize(output_size);
++
++  // Write decoded lines to the memory.
++  for (unsigned int row = 0; row < cinfo->output_height; row++) {
+     unsigned char* rowptr = &(*output)[row * row_write_stride];
+     if (!jpeg_read_scanlines(cinfo.get(), &rowptr, 1))
+       return false;
+diff --git a/ui/gfx/codec/jpeg_codec_unittest.cc b/ui/gfx/codec/jpeg_codec_unittest.cc
+index 9f1bee95e0e476b34382aceffbf6df3bdde095ea..b446fe77896e254820db77afe7ed4e48b8525c79 100644
+--- a/ui/gfx/codec/jpeg_codec_unittest.cc
++++ b/ui/gfx/codec/jpeg_codec_unittest.cc
+@@ -61,6 +61,53 @@ const uint8_t kTopSitesMigrationTestImage[] =
+     "\xfa\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00\x3f\x00\xf9"
+     "\xd2\x8a\x28\xaf\xc3\x0f\xf5\x4c\xff\xd9";
+ 
++// This is a copy of the above JPEG, with the Start-of-Frame header manually
++// rewritten to indicate an image size of 25000x25000. An image this large would
++// require more than 2GB of RAM to decode, so the decoder will reject the image
++// as soon as the header is parsed.
++const uint8_t kExtremelyLargeTestImage[] =
++    "\xff\xd8\xff\xe0\x00\x10\x4a\x46\x49\x46\x00\x01\x01\x00\x00\x01"
++    "\x00\x01\x00\x00\xff\xdb\x00\x43\x00\x03\x02\x02\x03\x02\x02\x03"
++    "\x03\x03\x03\x04\x03\x03\x04\x05\x08\x05\x05\x04\x04\x05\x0a\x07"
++    "\x07\x06\x08\x0c\x0a\x0c\x0c\x0b\x0a\x0b\x0b\x0d\x0e\x12\x10\x0d"
++    "\x0e\x11\x0e\x0b\x0b\x10\x16\x10\x11\x13\x14\x15\x15\x15\x0c\x0f"
++    "\x17\x18\x16\x14\x18\x12\x14\x15\x14\xff\xdb\x00\x43\x01\x03\x04"
++    "\x04\x05\x04\x05\x09\x05\x05\x09\x14\x0d\x0b\x0d\x14\x14\x14\x14"
++    "\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14"
++    "\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14"
++    "\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\x14\xff\xc0"
++    "\x00\x11\x08\x61\xa8\x61\xa8\x03\x01\x22\x00\x02\x11\x01\x03\x11"
++    //             ^^  ^^  ^^  ^^   image size forced to 25000x25000
++    "\x01\xff\xc4\x00\x1f\x00\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00"
++    "\x00\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09"
++    "\x0a\x0b\xff\xc4\x00\xb5\x10\x00\x02\x01\x03\x03\x02\x04\x03\x05"
++    "\x05\x04\x04\x00\x00\x01\x7d\x01\x02\x03\x00\x04\x11\x05\x12\x21"
++    "\x31\x41\x06\x13\x51\x61\x07\x22\x71\x14\x32\x81\x91\xa1\x08\x23"
++    "\x42\xb1\xc1\x15\x52\xd1\xf0\x24\x33\x62\x72\x82\x09\x0a\x16\x17"
++    "\x18\x19\x1a\x25\x26\x27\x28\x29\x2a\x34\x35\x36\x37\x38\x39\x3a"
++    "\x43\x44\x45\x46\x47\x48\x49\x4a\x53\x54\x55\x56\x57\x58\x59\x5a"
++    "\x63\x64\x65\x66\x67\x68\x69\x6a\x73\x74\x75\x76\x77\x78\x79\x7a"
++    "\x83\x84\x85\x86\x87\x88\x89\x8a\x92\x93\x94\x95\x96\x97\x98\x99"
++    "\x9a\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6\xb7"
++    "\xb8\xb9\xba\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5"
++    "\xd6\xd7\xd8\xd9\xda\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf1"
++    "\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xff\xc4\x00\x1f\x01\x00\x03"
++    "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x01"
++    "\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\xff\xc4\x00\xb5\x11\x00"
++    "\x02\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04\x00\x01\x02\x77\x00"
++    "\x01\x02\x03\x11\x04\x05\x21\x31\x06\x12\x41\x51\x07\x61\x71\x13"
++    "\x22\x32\x81\x08\x14\x42\x91\xa1\xb1\xc1\x09\x23\x33\x52\xf0\x15"
++    "\x62\x72\xd1\x0a\x16\x24\x34\xe1\x25\xf1\x17\x18\x19\x1a\x26\x27"
++    "\x28\x29\x2a\x35\x36\x37\x38\x39\x3a\x43\x44\x45\x46\x47\x48\x49"
++    "\x4a\x53\x54\x55\x56\x57\x58\x59\x5a\x63\x64\x65\x66\x67\x68\x69"
++    "\x6a\x73\x74\x75\x76\x77\x78\x79\x7a\x82\x83\x84\x85\x86\x87\x88"
++    "\x89\x8a\x92\x93\x94\x95\x96\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6"
++    "\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xc2\xc3\xc4"
++    "\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xe2"
++    "\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9"
++    "\xfa\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00\x3f\x00\xf9"
++    "\xd2\x8a\x28\xaf\xc3\x0f\xf5\x4c\xff\xd9";
++
+ }  // namespace
+ 
+ namespace gfx {
+@@ -211,4 +258,15 @@ TEST(JPEGCodec, ParallelEncoding) {
+   encode_loop.Run();
+ }
+ 
++TEST(JPEGCodec, ExtremelyLargeImage) {
++  std::vector<unsigned char> output;
++  int outw, outh;
++  bool ok = JPEGCodec::Decode(kExtremelyLargeTestImage,
++                              std::size(kExtremelyLargeTestImage),
++                              JPEGCodec::FORMAT_RGBA, &output, &outw, &outh);
++  EXPECT_FALSE(ok);
++  EXPECT_EQ(outw, 25000);
++  EXPECT_EQ(outh, 25000);
++}
++
+ }  // namespace gfx