diff options
Diffstat (limited to 'modules/pam_motd')
| -rw-r--r-- | modules/pam_motd/pam_motd.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c index 5ca486e4..dd84bcf0 100644 --- a/modules/pam_motd/pam_motd.c +++ b/modules/pam_motd/pam_motd.c @@ -7,6 +7,7 @@ #include "config.h" +#include <limits.h> #include <stdio.h> #include <string.h> #include <stdlib.h> @@ -174,7 +175,7 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh, unsigned int dirscans_size_total = 0; char **dirnames_all = NULL; unsigned int i; - int i_dirnames = 0; + unsigned int i_dirnames = 0; if (pamh == NULL || motd_dir_path_split == NULL) { goto out; @@ -203,6 +204,10 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh, } else { dirscans_sizes[i] = rv; } + if (dirscans_size_total > UINT_MAX - dirscans_sizes[i]) { + pam_syslog(pamh, LOG_CRIT, "encountered too many motd files"); + goto out; + } dirscans_size_total += dirscans_sizes[i]; } |