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Diffstat (limited to 'modules/pam_exec/pam_exec.c')
-rw-r--r--modules/pam_exec/pam_exec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/pam_exec/pam_exec.c b/modules/pam_exec/pam_exec.c
index 9d2145dc..41f6c589 100644
--- a/modules/pam_exec/pam_exec.c
+++ b/modules/pam_exec/pam_exec.c
@@ -274,7 +274,7 @@ call_exec (const char *pam_type, pam_handle_t *pamh,
{
size_t len;
len = strlen(buf);
- if (buf[len-1] == '\n')
+ if (len > 0 && buf[len-1] == '\n')
buf[len-1] = '\0';
pam_info(pamh, "%s", buf);
}