[FFmpeg-cvslog] avcodec/ac3enc_template: fix out of array read

Michael Niedermayer git at videolan.org
Thu Mar 12 18:05:25 CET 2015


ffmpeg | branch: release/0.10 | Michael Niedermayer <michaelni at gmx.at> | Sat Sep 27 20:34:44 2014 +0200| [348b87b9bd510dd550b0bc0971a37e35ac87de9c] | committer: Michael Niedermayer

avcodec/ac3enc_template: fix out of array read

Found-by: Andreas Cadhalpun
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit d85ebea3f3b68ebccfe308fa839fc30fa634e4de)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=348b87b9bd510dd550b0bc0971a37e35ac87de9c
---

 libavcodec/ac3enc_template.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/ac3enc_template.c b/libavcodec/ac3enc_template.c
index 6047255..b6b9e40 100644
--- a/libavcodec/ac3enc_template.c
+++ b/libavcodec/ac3enc_template.c
@@ -261,7 +261,7 @@ static void apply_channel_coupling(AC3EncodeContext *s)
                 energy_cpl = energy[blk][CPL_CH][bnd];
                 energy_ch = energy[blk][ch][bnd];
                 blk1 = blk+1;
-                while (!s->blocks[blk1].new_cpl_coords[ch] && blk1 < s->num_blocks) {
+                while (blk1 < s->num_blocks && !s->blocks[blk1].new_cpl_coords[ch]) {
                     if (s->blocks[blk1].cpl_in_use) {
                         energy_cpl += energy[blk1][CPL_CH][bnd];
                         energy_ch += energy[blk1][ch][bnd];



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