Fixes: signed integer overflow: 9223372036854775796 + 12 cannot be represented in type 'long long' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4898373660704768
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/iff.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/iff.c b/libavformat/iff.c index b8e8bffe03f..5bff0e9b6c1 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -217,7 +217,7 @@ static int parse_dsd_diin(AVFormatContext *s, AVStream *st, uint64_t eof) { AVIOContext *pb = s->pb; - while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) { + while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) { uint32_t tag = avio_rl32(pb); uint64_t size = avio_rb64(pb); uint64_t orig_pos = avio_tell(pb); @@ -254,7 +254,7 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof) int dsd_layout[6]; ID3v2ExtraMeta *id3v2_extra_meta; - while (avio_tell(pb) + 12 <= eof && !avio_feof(pb)) { + while (av_sat_add64(avio_tell(pb), 12) <= eof && !avio_feof(pb)) { uint32_t tag = avio_rl32(pb); uint64_t size = avio_rb64(pb); uint64_t orig_pos = avio_tell(pb); -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
