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author | wm4 <nfxjfg@googlemail.com> | 2015-02-03 19:04:11 +0100 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2015-02-04 01:05:26 +0100 |
commit | 55b75ece704395b5580dabcd3f426f51ed82ee3c (patch) | |
tree | ba8d25eba3b5894e64e5866b38e0aab61f979701 | |
parent | 28f303542e90bc34f96e2e04af6f1b9e9b9d65ab (diff) | |
download | ffmpeg-55b75ece704395b5580dabcd3f426f51ed82ee3c.tar.gz |
avformat/mpc8: fix broken pointer math
This could overflow and crash at least on 32 bit systems.
Reviewed-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit b737a2c52857b214be246ff615c6293730033cfa)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
-rw-r--r-- | libavformat/mpc8.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/mpc8.c b/libavformat/mpc8.c index 31026fef1c..6ef8cab955 100644 --- a/libavformat/mpc8.c +++ b/libavformat/mpc8.c @@ -91,7 +91,7 @@ static int mpc8_probe(AVProbeData *p) size = bs_get_v(&bs); if (size < 2) return 0; - if (bs + size - 2 >= bs_end) + if (size >= bs_end - bs + 2) return AVPROBE_SCORE_EXTENSION - 1; // seems to be valid MPC but no header yet if (header_found) { if (size < 11 || size > 28) |