[PATCH] Audit: fix audit watch use after free

When an audit watch is added to a parent the temporary watch inside the original krule from userspace is freed. Yet the original watch is used after the real watch was created in audit_add_rules() Signed-off-by: Eric Paris <eparis(a)redhat.com&gt; --- kernel/auditfilter.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index 713098e..19c0a0a 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -1320,6 +1320,8 @@ static inline int audit_add_rule(struct audit_entry *entry) mutex_unlock(&audit_filter_mutex); goto error; } + /* entry->rule.watch may have changed during audit_add_watch() */ + watch = entry->rule.watch; h = audit_hash_ino((u32)watch->ino); list = &audit_inode_hash[h]; }