On Fri, Jul 11, 2025 at 09:49:29PM +0200, Kacper Michajłow wrote: > Fixes: signed integer overflow: 9223372036854737920 + 1649410 cannot be > represented in type 'int64_t' > > Fixes OSS-Fuzz: 410100610 > > Signed-off-by: Kacper Michajłow <kaspe...@gmail.com> > --- > libavformat/subfile.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/libavformat/subfile.c b/libavformat/subfile.c > index be48ef72ef..b8c6ce0eef 100644 > --- a/libavformat/subfile.c > +++ b/libavformat/subfile.c > @@ -128,13 +128,13 @@ static int64_t subfile_seek(URLContext *h, int64_t pos, > int whence) > case AVSEEK_SIZE: > return end - c->start; > case SEEK_SET: > - new_pos = c->start + pos; > + new_pos = c->start + av_clip(pos, 0, end - c->start); > break; > case SEEK_CUR: > - new_pos = c->pos + pos; > + new_pos = c->pos + av_clip(pos, -(c->pos - c->start), end - c->pos); > break; > case SEEK_END: > - new_pos = end + pos; > + new_pos = end + av_clip(pos, -(end - c->start), 0); > break; > default: > av_assert0(0);
regression fix for this is here: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20055 [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB During times of universal deceit, telling the truth becomes a revolutionary act. -- George Orwell
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