Fixes: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long' Fixes: 29743/clusterfuzz-testcase-minimized-ffmpeg_dem_SAMI_fuzzer-5499256859394048
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/samidec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavformat/samidec.c b/libavformat/samidec.c index 3070ef9bac..cf5076c7b8 100644 --- a/libavformat/samidec.c +++ b/libavformat/samidec.c @@ -95,6 +95,11 @@ static int sami_read_header(AVFormatContext *s) const char *p = ff_smil_get_attr_ptr(buf.str, "Start"); sub->pos = pos; sub->pts = p ? strtol(p, NULL, 10) : 0; + if (sub->pts <= INT64_MIN/2 || sub->pts >= INT64_MAX/2) { + res = AVERROR_PATCHWELCOME; + goto end; + } + sub->duration = -1; } } -- 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".
