mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-03-17 20:17:55 +02:00
avformat/jacosubdec: Check for min in t overflow in get_shift()
Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Fixes: 34651/clusterfuzz-testcase-minimized-ffmpeg_dem_JACOSUB_fuzzer-5157941012463616 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 989febfbd0c986e9e3e0f269a6b22778bf79147b) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
90d2f32f62
commit
cbe954f578
@ -140,6 +140,9 @@ static int get_shift(int timeres, const char *buf)
|
||||
int n = sscanf(buf, "%d"SSEP"%d"SSEP"%d"SSEP"%d", &a, &b, &c, &d);
|
||||
#undef SSEP
|
||||
|
||||
if (a == INT_MIN)
|
||||
return 0;
|
||||
|
||||
if (*buf == '-' || a < 0) {
|
||||
sign = -1;
|
||||
a = FFABS(a);
|
||||
|
Loading…
x
Reference in New Issue
Block a user