ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Tue Apr 21 00:03:40 2020 +0200| [56774297bb5a49421d3e4d60d62371cc5a68b26a] | committer: Michael Niedermayer
avcodec/iff: Check length before memcpy() in decode_deep_rle32() Fixes: out of array read Fixes: 20796/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5111364702175232.fuzz Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit b4a33387cb1cd3f4c5036e65e0fdd953c6b5012f) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=56774297bb5a49421d3e4d60d62371cc5a68b26a --- libavcodec/iff.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/iff.c b/libavcodec/iff.c index 7f8f868ba9..3fe27f25ab 100644 --- a/libavcodec/iff.c +++ b/libavcodec/iff.c @@ -597,6 +597,8 @@ static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, in int size = opcode + 1; for (i = 0; i < size; i++) { int length = FFMIN(size - i, width); + if (src_end - src < length * 4) + return; memcpy(dst + y*linesize + x * 4, src, length * 4); src += length * 4; x += length; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
