Commit 0e51c7b6 authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec/iff: Fix off by x error

Fixes: out of array access
Fixes: 23245/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5723121327013888.fuzz

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 51225dee0a6266780d26d43bd6802bbcf736327e)
Signed-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
parent 28460ece
...@@ -723,7 +723,7 @@ static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, in ...@@ -723,7 +723,7 @@ static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, in
if (opcode >= 0) { if (opcode >= 0) {
int size = opcode + 1; int size = opcode + 1;
for (i = 0; i < size; i++) { for (i = 0; i < size; i++) {
int length = FFMIN(size - i, width); int length = FFMIN(size - i, width - x);
if (src_end - src < length * 4) if (src_end - src < length * 4)
return; return;
memcpy(dst + y*linesize + x * 4, src, length * 4); memcpy(dst + y*linesize + x * 4, src, length * 4);
......
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