har0ke/FFmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

avcodec/vlc: fix off by one in limit check for multi

Browse Source
This commit is contained in:
Paul B Mahol 2023-09-27 19:13:58 +02:00
parent 58b6c0c327
commit b23eaf968e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavcodec/vlc.c
View File

@ -368,7 +368,7 @@ static void add_level(VLC_MULTI_ELEM *table, const int nb_elems,
uint32_t code; uint32_t code;
sym = buf[t].symbol; sym = buf[t].symbol;
if (l > curlimit) if (l >= curlimit)
return; return;
code = curcode + (buf[t].code >> curlen); code = curcode + (buf[t].code >> curlen);
newlimit = curlimit - l; newlimit = curlimit - l;
@ -401,7 +401,7 @@ static int vlc_multi_gen(VLC_MULTI_ELEM *table, const VLC *single,
{ {
int minbits, maxbits, max = nb_codes-1; int minbits, maxbits, max = nb_codes-1;
unsigned count[VLC_MULTI_MAX_SYMBOLS-1] = { 0, }; unsigned count[VLC_MULTI_MAX_SYMBOLS-1] = { 0, };
VLC_MULTI_ELEM info = { { 0, }, 0, }; VLC_MULTI_ELEM info = { { 0, }, 0, 0, };
minbits = buf[0].bits; minbits = buf[0].bits;
maxbits = buf[0].bits; maxbits = buf[0].bits;