diff options
| -rw-r--r-- | ChangeLog | 10 | ||||
| -rw-r--r-- | src/truetype/ttinterp.c | 5 |
2 files changed, 14 insertions, 1 deletions
@@ -1,3 +1,13 @@ +2018-04-15 Werner Lemberg <wl@gnu.org> + + [truetype]: Limit `SLOOP' bytecode argument to 16 bits. + + This fixes + + https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7707 + + * src/truetype/ttinterp.c (Ins_SLOOP): Do it. + 2018-04-14 Werner Lemberg <wl@gnu.org> [truetype] Integer overflow issues. diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c index d9865d4af..c66c69929 100644 --- a/src/truetype/ttinterp.c +++ b/src/truetype/ttinterp.c @@ -3289,7 +3289,10 @@ if ( args[0] < 0 ) exc->error = FT_THROW( Bad_Argument ); else - exc->GS.loop = args[0]; + { + /* we heuristically limit the number of loops to 16 bits */ + exc->GS.loop = args[0] > 0xFFFFL ? 0xFFFFL : args[0]; + } } |