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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-29 12:40:48 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-08-03 02:08:16 +0200 |
| commit | 7dd836a3f9771e0e44df1b27e67d6866d91e06d7 (patch) | |
| tree | a7c64ab83b64fc929ddcef2f36eb44f46059ff8d /libavcodec/qtrle.c | |
| parent | 2de5209d912d1ef153850d67b33dc87ee51c7ec9 (diff) | |
| download | ffmpeg-7dd836a3f9771e0e44df1b27e67d6866d91e06d7.tar.gz | |
avcodec/qtrle: Check remaining bytestream in qtrle_decode_XYbpp()
Fixes: Timeout
Fixes: 9213/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QTRLE_fuzzer-5649753332252672
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/qtrle.c')
| -rw-r--r-- | libavcodec/qtrle.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/qtrle.c b/libavcodec/qtrle.c index 670690d0a4..6155b4f3e3 100644 --- a/libavcodec/qtrle.c +++ b/libavcodec/qtrle.c @@ -155,6 +155,8 @@ static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr, CHECK_PIXEL_PTR(0); while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { + if (bytestream2_get_bytes_left(&s->g) < 1) + return; if (rle_code == 0) { /* there's another skip code in the stream */ pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1)); @@ -210,6 +212,8 @@ static void qtrle_decode_8bpp(QtrleContext *s, int row_ptr, int lines_to_change) CHECK_PIXEL_PTR(0); while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { + if (bytestream2_get_bytes_left(&s->g) < 1) + return; if (rle_code == 0) { /* there's another skip code in the stream */ pixel_ptr += (4 * (bytestream2_get_byte(&s->g) - 1)); @@ -259,6 +263,8 @@ static void qtrle_decode_16bpp(QtrleContext *s, int row_ptr, int lines_to_change CHECK_PIXEL_PTR(0); while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { + if (bytestream2_get_bytes_left(&s->g) < 1) + return; if (rle_code == 0) { /* there's another skip code in the stream */ pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 2; @@ -303,6 +309,8 @@ static void qtrle_decode_24bpp(QtrleContext *s, int row_ptr, int lines_to_change CHECK_PIXEL_PTR(0); while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { + if (bytestream2_get_bytes_left(&s->g) < 1) + return; if (rle_code == 0) { /* there's another skip code in the stream */ pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 3; @@ -350,6 +358,8 @@ static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change CHECK_PIXEL_PTR(0); while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { + if (bytestream2_get_bytes_left(&s->g) < 1) + return; if (rle_code == 0) { /* there's another skip code in the stream */ pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 4; |