From: Richard Guy Briggs <rgb@redhat.com>
Date: Wed, 5 Mar 2025 21:33:20 +0000 (-0500)
Subject: audit: record AUDIT_ANOM_* events regardless of presence of rules
X-Git-Tag: v6.16-rc1~146^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=654d61b8e0e2f8b9bdea28a9a51279ecdacafe3c;p=thirdparty%2Fkernel%2Flinux.git

audit: record AUDIT_ANOM_* events regardless of presence of rules

When no audit rules are in place, AUDIT_ANOM_{LINK,CREAT} events
reported in audit_log_path_denied() are unconditionally dropped due to
an explicit check for the existence of any audit rules.  Given this is a
report of a security violation, allow it to be recorded regardless of
the existence of any audit rules.

To test,
	mkdir -p /root/tmp
	chmod 1777 /root/tmp
	touch /root/tmp/test.txt
	useradd test
	chown test /root/tmp/test.txt
	{echo C0644 12 test.txt; printf 'hello\ntest1\n'; printf \\000;} | \
		scp -t /root/tmp
Check with
	ausearch -m ANOM_CREAT -ts recent

Link: https://issues.redhat.com/browse/RHEL-9065
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
---

diff --git a/kernel/audit.c b/kernel/audit.c
index f365e1bbeac64..61b5744d0bb68 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -2285,7 +2285,7 @@ void audit_log_path_denied(int type, const char *operation)
 {
 	struct audit_buffer *ab;
 
-	if (!audit_enabled || audit_dummy_context())
+	if (!audit_enabled)
 		return;
 
 	/* Generate log with subject, operation, outcome. */