shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2025-01-21 18:03:41 +03:00
Code

nss-myhostname: do not apply non-zero offset to null pointer

Browse Source 
Fixes https://github.com/systemd/systemd/issues/21935#issuecomment-1003216503.

(cherry picked from commit 92e9df9ca031b9b04487a46afd986ab3122183fd)
This commit is contained in:
Yu Watanabe 2021-12-31 09:13:00 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 9c8bc0451a
commit a473bfb433
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/nss-myhostname/nss-myhostname.c
View File

@ -39,10 +39,8 @@ enum nss_status _nss_myhostname_gethostbyname4_r(
const char *canonical = NULL;
int n_addresses = 0;
uint32_t local_address_ipv4;
struct local_address *a;
size_t l, idx, ms;
char *r_name;
unsigned n;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
@ -136,7 +134,9 @@ enum nss_status _nss_myhostname_gethostbyname4_r(
}
/* Fourth, fill actual addresses in, but in backwards order */
for (a = addresses + n_addresses - 1, n = 0; (int) n < n_addresses; n++, a--) {
for (int i = n_addresses; i > 0; i--) {
struct local_address *a = addresses + i - 1;
r_tuple = (struct gaih_addrtuple*) (buffer + idx);
r_tuple->next = r_tuple_prev;
r_tuple->name = r_name;