diff options
Diffstat (limited to 'kernel/audit.c')
| -rw-r--r-- | kernel/audit.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index 241aa8593fa8..998a0d4155cf 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -49,6 +49,7 @@ #include <linux/slab.h> #include <linux/err.h> #include <linux/kthread.h> +#include <linux/kernel.h> #include <linux/audit.h> @@ -808,6 +809,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) spin_lock_irqsave(&tsk->sighand->siglock, flags); s.enabled = tsk->signal->audit_tty != 0; + s.log_passwd = tsk->signal->audit_tty_log_passwd; spin_unlock_irqrestore(&tsk->sighand->siglock, flags); audit_send_reply(NETLINK_CB(skb).portid, seq, @@ -815,18 +817,20 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) break; } case AUDIT_TTY_SET: { - struct audit_tty_status *s; + struct audit_tty_status s; struct task_struct *tsk = current; unsigned long flags; - if (nlh->nlmsg_len < sizeof(struct audit_tty_status)) - return -EINVAL; - s = data; - if (s->enabled != 0 && s->enabled != 1) + memset(&s, 0, sizeof(s)); + /* guard against past and future API changes */ + memcpy(&s, data, min(sizeof(s), (size_t)nlh->nlmsg_len)); + if ((s.enabled != 0 && s.enabled != 1) || + (s.log_passwd != 0 && s.log_passwd != 1)) return -EINVAL; spin_lock_irqsave(&tsk->sighand->siglock, flags); - tsk->signal->audit_tty = s->enabled != 0; + tsk->signal->audit_tty = s.enabled; + tsk->signal->audit_tty_log_passwd = s.log_passwd; spin_unlock_irqrestore(&tsk->sighand->siglock, flags); break; } |