[PATCH] KEYS: fix cred refcount leak in request_key_auth_new()
From: Eric Biggers <hidden>
Date: 2017-09-21 20:37:48
Also in:
keyrings, lkml
From: Eric Biggers <hidden>
Date: 2017-09-21 20:37:48
Also in:
keyrings, lkml
On Tue, Sep 19, 2017 at 04:46:08PM +0100, David Howells wrote:
Eric Biggers [off-list ref] wrote:quoted
In request_key_auth_new(), if alloc_key() or key_instantiate_and_link() were to fail, we would leak a reference to the 'struct cred'. Currently this can only happen if alloc_key() fails to to allocate memory. But it still should be fixed, as it is a more severe bug waiting to happen.It might be better to combine request_key_auth_destroy() and the error path that you're altering in request_key_auth_new() by pulling it into a separate function. David
Agreed, I'll do that. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html