From 939cbf260c1abce6cad4b95ea4ba9f5132b660b3 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Wed, 23 Sep 2009 13:46:00 -0400 Subject: Audit: send signal info if selinux is disabled Audit will not respond to signal requests if selinux is disabled since it is unable to translate the 0 sid from the sending process to a context. This patch just doesn't send the context info if there isn't any. Signed-off-by: Eric Paris Signed-off-by: Al Viro --- kernel/audit.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) (limited to 'kernel') diff --git a/kernel/audit.c b/kernel/audit.c index defc2e6f1e3..5feed232be9 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -855,18 +855,24 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) break; } case AUDIT_SIGNAL_INFO: - err = security_secid_to_secctx(audit_sig_sid, &ctx, &len); - if (err) - return err; + len = 0; + if (audit_sig_sid) { + err = security_secid_to_secctx(audit_sig_sid, &ctx, &len); + if (err) + return err; + } sig_data = kmalloc(sizeof(*sig_data) + len, GFP_KERNEL); if (!sig_data) { - security_release_secctx(ctx, len); + if (audit_sig_sid) + security_release_secctx(ctx, len); return -ENOMEM; } sig_data->uid = audit_sig_uid; sig_data->pid = audit_sig_pid; - memcpy(sig_data->ctx, ctx, len); - security_release_secctx(ctx, len); + if (audit_sig_sid) { + memcpy(sig_data->ctx, ctx, len); + security_release_secctx(ctx, len); + } audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_SIGNAL_INFO, 0, 0, sig_data, sizeof(*sig_data) + len); kfree(sig_data); -- cgit v1.2.3