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Diffstat (limited to 'libavcodec/interplayvideo.c')
-rw-r--r--libavcodec/interplayvideo.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/libavcodec/interplayvideo.c b/libavcodec/interplayvideo.c
index 645fc16e68..542fefe146 100644
--- a/libavcodec/interplayvideo.c
+++ b/libavcodec/interplayvideo.c
@@ -197,6 +197,11 @@ static int ipvideo_decode_block_opcode_0x7(IpvideoContext *s, AVFrame *frame)
unsigned char P[2];
unsigned int flags;
+ if (bytestream2_get_bytes_left(&s->stream_ptr) < 4) {
+ av_log(s->avctx, AV_LOG_ERROR, "too little data for opcode 0x7\n");
+ return AVERROR_INVALIDDATA;
+ }
+
/* 2-color encoding */
P[0] = bytestream2_get_byte(&s->stream_ptr);
P[1] = bytestream2_get_byte(&s->stream_ptr);
@@ -236,6 +241,11 @@ static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s, AVFrame *frame)
unsigned char P[4];
unsigned int flags = 0;
+ if (bytestream2_get_bytes_left(&s->stream_ptr) < 12) {
+ av_log(s->avctx, AV_LOG_ERROR, "too little data for opcode 0x8\n");
+ return AVERROR_INVALIDDATA;
+ }
+
/* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
* either top and bottom or left and right halves */
P[0] = bytestream2_get_byte(&s->stream_ptr);
@@ -477,6 +487,11 @@ static int ipvideo_decode_block_opcode_0xD(IpvideoContext *s, AVFrame *frame)
int y;
unsigned char P[2];
+ if (bytestream2_get_bytes_left(&s->stream_ptr) < 4) {
+ av_log(s->avctx, AV_LOG_ERROR, "too little data for opcode 0xD\n");
+ return AVERROR_INVALIDDATA;
+ }
+
/* 4-color block encoding: each 4x4 block is a different color */
for (y = 0; y < 8; y++) {
if (!(y & 3)) {