[ Upstream commit
c73275cf6834787ca090317f1d20dbfa3b7f05aa ]
In multi_transaction_new(), the variable t is not freed or passed out
on the failure of copy_from_user(t->data, buf, size), which could lead
to a memleak.
Fix this bug by adding a put_multi_transaction(t) in the error path.
Fixes:
1dea3b41e84c5 ("apparmor: speed up transactional queries")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
if (!t)
return ERR_PTR(-ENOMEM);
kref_init(&t->count);
- if (copy_from_user(t->data, buf, size))
+ if (copy_from_user(t->data, buf, size)) {
+ put_multi_transaction(t);
return ERR_PTR(-EFAULT);
+ }
return t;
}