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audit: record AUDIT_ANOM_* events regardless of presence of rules

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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>
This commit is contained in:
Richard Guy Briggs 2025-03-05 16:33:20 -05:00 committed by Paul Moore
parent baaba7b448
commit 654d61b8e0
1 changed files with 1 additions and 1 deletions
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2
kernel/audit.c
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@ -2285,7 +2285,7 @@ void audit_log_path_denied(int type, const char *operation)
{ {
struct audit_buffer *ab; struct audit_buffer *ab;
if (!audit_enabled || audit_dummy_context()) if (!audit_enabled)
return; return;
/* Generate log with subject, operation, outcome. */ /* Generate log with subject, operation, outcome. */