ffmpeg | branch: master | Martin Storsjö <[email protected]> | Thu Dec 15 10:24:20 2016 +0200| [131644677970a3c4a0096270ea2a5b5d437c2e63] | committer: Martin Storsjö
http: Check for negative chunk sizes A negative chunk size is illegal and would end up used as length for memcpy, where it would lead to memory accesses out of bounds. Found-by: Paul Cher <[email protected]> CC: [email protected] Signed-off-by: Martin Storsjö <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=131644677970a3c4a0096270ea2a5b5d437c2e63 --- libavformat/http.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/libavformat/http.c b/libavformat/http.c index 8fe8d11e1e..00cf295001 100644 --- a/libavformat/http.c +++ b/libavformat/http.c @@ -784,8 +784,9 @@ static int http_read_stream(URLContext *h, uint8_t *buf, int size) av_log(NULL, AV_LOG_TRACE, "Chunked encoding data size: %"PRId64"'\n", s->chunksize); - - if (!s->chunksize) + if (s->chunksize < 0) + return AVERROR_INVALIDDATA; + else if (!s->chunksize) return 0; break; } _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
