libclamav/matcher-bm.c: fix offset check (bb#2032)

15 years ago · a205da7fd7
parent 6ed8f1f846
commit a205da7fd7
2 changed files with 6 additions and 0 deletions
--- a/4
+++ b/4
@ -1,3 +1,7 @@
+Tue May 18 23:35:43 CEST 2010 (tk)
+----------------------------------
+ * libclamav/matcher-bm.c: fix offset check (bb#2032)
+
 Tue May 18 20:20:15 EEST 2010 (edwin)
 -------------------------------------
 * libclamav/fmap.c: fix bug introduced in clamav-0.96-51-g3e3b587.
--- a/libclamav/matcher-bm.c
+++ b/libclamav/matcher-bm.c
@ -271,6 +271,8 @@ int cli_bm_scanbuff(const unsigned char *buffer, uint32_t length, const char **v
    if(offdata) {
 	if(!offdata->cnt)
 	    return CL_CLEAN;
+	if(offdata->pos == offdata->cnt)
+	    offdata->pos--;
 	for(; offdata->pos && offdata->offtab[offdata->pos] > offset; offdata->pos--);
 	if(offdata->offtab[offdata->pos] < offset)
 	    offdata->pos++;