diff options
| author | Reimar Döffinger | 2009-05-31 10:23:38 +0000 |
|---|---|---|
| committer | Reimar Döffinger | 2009-05-31 10:23:38 +0000 |
| commit | dbc53ffc7c398f90ae1cf59e513d3882bc0dc188 (patch) | |
| tree | fe64a0878e7fd1993bfa8867aa4f4cedf9554b4a /libavcodec/lcldec.c | |
| parent | 2fddb91e9496eb0e3caf99342123ef4cce801c14 (diff) | |
Change buffer size checks to avoid the undefined overflow case.
Originally committed as revision 19047 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/lcldec.c')
| -rw-r--r-- | libavcodec/lcldec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/lcldec.c b/libavcodec/lcldec.c index 4a5a2eb799..9ad731e56a 100644 --- a/libavcodec/lcldec.c +++ b/libavcodec/lcldec.c @@ -87,7 +87,7 @@ static unsigned int mszh_decomp(unsigned char * srcptr, int srclen, unsigned cha continue; } if ((mask & (1 << (--maskbit))) == 0) { - if (destptr + 4 > destptr_end) + if (destptr_end - destptr < 4) break; memcpy(destptr, srcptr, 4); srclen -= 4; @@ -101,7 +101,7 @@ static unsigned int mszh_decomp(unsigned char * srcptr, int srclen, unsigned cha ofs &= 0x7ff; srclen -= 2; cnt *= 4; - if (destptr + cnt > destptr_end) { + if (destptr_end - destptr < cnt) { cnt = destptr_end - destptr; } for (; cnt > 0; cnt--) { |