Fixes: 612/clusterfuzz-testcase-
4707817137111040
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
} else {
int shift_y = 16 - ctx->sprite_shift[0];
int shift_c = 16 - ctx->sprite_shift[1];
+
+ if (shift_c < 0 || shift_y < 0) {
+ avpriv_request_sample(s->avctx, "Too large sprite shift");
+ return AVERROR_PATCHWELCOME;
+ }
+
for (i = 0; i < 2; i++) {
s->sprite_offset[0][i] *= 1 << shift_y;
s->sprite_offset[1][i] *= 1 << shift_c;