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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-19 00:11:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-19 00:55:04 +0200 |
| commit | 624f6df19f79f319faf19718c24a9471fa36f61c (patch) | |
| tree | a8886937ca0e7f84cdae60632b738e47a73a5e63 /libavformat/3dostr.c | |
| parent | d54c24acde88a214489d5ef410982eedac7ffc29 (diff) | |
| download | ffmpeg-624f6df19f79f319faf19718c24a9471fa36f61c.tar.gz | |
avformat/3dostr: Check remaining buffer in probe before 8 byte step
Fixes: segfault
Fixes: signal_sigabrt_7ffff6ae7cc9_7213_0d6457b9d6897fa7c78507fa5de53510.ts
Regression since: 3ac45bf66561a667260cac37223c0393f7333fca
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/3dostr.c')
| -rw-r--r-- | libavformat/3dostr.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libavformat/3dostr.c b/libavformat/3dostr.c index 2d92b46570..2a35d661c3 100644 --- a/libavformat/3dostr.c +++ b/libavformat/3dostr.c @@ -29,10 +29,9 @@ static int threedostr_probe(const AVProbeData *p) unsigned chunk = AV_RL32(p->buf + i); unsigned size = AV_RB32(p->buf + i + 4); - i += 8; if (size < 8 || p->buf_size - i < size) return 0; - + i += 8; size -= 8; switch (chunk) { case MKTAG('C','T','R','L'): |