From: Michael Niedermayer <[email protected]>

Add a check to avoid writing past the end of the channel_unit.components[]
array.

Fixes CVE-2012-0853

Signed-off-by: Michael Niedermayer <[email protected]>
Signed-off-by: Justin Ruggles <[email protected]>
---
 libavcodec/atrac3.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavcodec/atrac3.c b/libavcodec/atrac3.c
index fd036e7..136b16c 100644
--- a/libavcodec/atrac3.c
+++ b/libavcodec/atrac3.c
@@ -402,6 +402,8 @@ static int decodeTonalComponents (GetBitContext *gb, 
tonal_component *pComponent
 
             for (k=0; k<coded_components; k++) {
                 sfIndx = get_bits(gb,6);
+                if (component_count >= 64)
+                    return AVERROR_INVALIDDATA;
                 pComponent[component_count].pos = j * 64 + (get_bits(gb,6));
                 max_coded_values = SAMPLES_PER_FRAME - 
pComponent[component_count].pos;
                 coded_values = coded_values_per_component + 1;
-- 
1.7.1

_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel

Reply via email to