ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Wed Mar 17 22:19:33 2021 +0100| [e8bd34fe4fc05700b19c3915ff9768c8072309c4] | committer: Michael Niedermayer
avcodec/sga: Check for array end in lzss_decompress() Fixes: out of array access Fixes: 31640/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGA_fuzzer-5630883286614016 Fixes: 31619/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGA_fuzzer-5176667708456960 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e8bd34fe4fc05700b19c3915ff9768c8072309c4 --- libavcodec/sga.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/sga.c b/libavcodec/sga.c index 00752a5843..7e6bea530c 100644 --- a/libavcodec/sga.c +++ b/libavcodec/sga.c @@ -232,7 +232,7 @@ static int lzss_decompress(AVCodecContext *avctx, if (offset <= 0) offset = 1; - if (oi < offset) + if (oi < offset || oi + count * 2 > dst_size) return AVERROR_INVALIDDATA; for (int j = 0; j < count * 2; j++) { dst[oi] = dst[oi - offset]; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
