diff options
Diffstat (limited to 'gnu/packages/patches/libevent-2.0-evdns-fix-searching-empty-hostnames.patch')
| -rw-r--r-- | gnu/packages/patches/libevent-2.0-evdns-fix-searching-empty-hostnames.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gnu/packages/patches/libevent-2.0-evdns-fix-searching-empty-hostnames.patch b/gnu/packages/patches/libevent-2.0-evdns-fix-searching-empty-hostnames.patch new file mode 100644 index 0000000000..c4ad0a1a4a --- /dev/null +++ b/gnu/packages/patches/libevent-2.0-evdns-fix-searching-empty-hostnames.patch @@ -0,0 +1,40 @@ +Fix OOB read on empty hostnames in evdns. + +Upstream bug report: + +https://github.com/libevent/libevent/issues/332 + +Patch copied from upstream source repository: + +https://github.com/libevent/libevent/commit/ec65c42052d95d2c23d1d837136d1cf1d9ecef9e + +From a0305cec166a5bc89f1eb362510cc4cd25ecc0bc Mon Sep 17 00:00:00 2001 +From: Azat Khuzhin <a3at.mail@gmail.com> +Date: Fri, 25 Mar 2016 00:33:47 +0300 +Subject: [PATCH] evdns: fix searching empty hostnames + +--- + evdns.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/evdns.c b/evdns.c +index 137c24ea..6191c677 100644 +--- a/evdns.c ++++ b/evdns.c +@@ -3122,9 +3122,12 @@ search_set_from_hostname(struct evdns_base *base) { + static char * + search_make_new(const struct search_state *const state, int n, const char *const base_name) { + const size_t base_len = strlen(base_name); +- const char need_to_append_dot = base_name[base_len - 1] == '.' ? 0 : 1; ++ char need_to_append_dot; + struct search_domain *dom; + ++ if (!base_len) return NULL; ++ need_to_append_dot = base_name[base_len - 1] == '.' ? 0 : 1; ++ + for (dom = state->head; dom; dom = dom->next) { + if (!n--) { + /* this is the postfix we want */ +-- +2.11.0 + |