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Code Issues Releases Activity

avcodec/takdec: Fix runtime error: signed integer overflow: 8192 * 524308 cannot be represented in type 'int'

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Fixes: 1630/clusterfuzz-testcase-minimized-6326111917047808

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 955db41192)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-17 00:07:02 +02:00
parent 0155d1c1cb
commit ea4b807c0a
1 changed files with 2 additions and 2 deletions
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4
libavcodec/takdec.c
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@ -253,11 +253,11 @@ static int decode_segment(TAKDecContext *s, int8_t mode, int32_t *decoded, int l
code = xcodes[mode - 1];
for (i = 0; i < len; i++) {
int x = get_bits_long(gb, code.init);
unsigned x = get_bits_long(gb, code.init);
if (x >= code.escape && get_bits1(gb)) {
x |= 1 << code.init;
if (x >= code.aescape) {
int scale = get_unary(gb, 1, 9);
unsigned scale = get_unary(gb, 1, 9);
if (scale == 9) {
int scale_bits = get_bits(gb, 3);
if (scale_bits > 0) {