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avformat/sdp: Fix potential write beyond end of buffer 

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 5d91b7718e)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-07-07 21:50:33 +02:00
parent 40e049856e
commit d359b750af
1 changed files with 1 additions and 1 deletions
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2
libavformat/sdp.c
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@ -212,7 +212,7 @@ static char *extradata2psets(AVFormatContext *s, AVCodecParameters *par)
p += strlen(p);
r = r1;
}
if (sps && sps_end - sps >= 4) {
if (sps && sps_end - sps >= 4 && p - psets <= MAX_PSET_SIZE - strlen(profile_string) - 7) {
memcpy(p, profile_string, strlen(profile_string));
p += strlen(p);
ff_data_to_hex(p, sps + 1, 3, 0);