On Mon, Feb 12, 2018 at 5:04 AM, Richard Guy Briggs <rgb(a)redhat.com> wrote:
A bug was introduced in 8fae47705685fcaa75a1fe4c8c3e18300a702979
("audit: add support for session ID user filter")
See:
https://github.com/linux-audit/audit-kernel/issues/4
When setting a session ID filter, the session ID filter field overwrote
the quick pointer reference to the arch field, potentially causing the
arch field to be misinterpreted.
Passes audit-testsuite.
Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com>
---
kernel/auditfilter.c | 1 -
1 file changed, 1 deletion(-)
Good catch. Merged.
Looking at the original patch and audit_field_valid(), I think we
should probably look into tightening up what constitutes "valid"
fields. For example, does it make sense to allow anything but
equal/not-equal when comparing AUDIT_SUBJ_TYPE? (note well: this is
just one example, there are many more)
*
https://github.com/linux-audit/audit-kernel/issues/73
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 4a1758a..739a6d2 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -496,7 +496,6 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data
*data,
if (!gid_valid(f->gid))
goto exit_free;
break;
- case AUDIT_SESSIONID:
case AUDIT_ARCH:
entry->rule.arch_f = f;
break;
--
1.8.3.1
--
paul moore
www.paul-moore.com