retitle 476419 libpcre3: stack overflow via certain regular expressions thanks
Hi! This really seems to be what valgrind says it is -- Stack overflow. Kai's regular expression triggers deep recursion in match(), finally leading to a stack overflow after ~8000 nested calls (on Debian). Attached is a simple pcre-only reproducer. Should SEGV with arguments ~4100. Default recursion limit assumed by pcre seems to be set way too high. Rebuilding pcre with --with-match-limit-recursion set to lower value avoids SEGVs. -- Tomas Hoger
deb476419.sh
Description: application/shellscript
