[PATCH v2 3/6] KEYS: Prevent overflow of user->{qnkeys,qnbytes} in key_alloc()

[Eric Biggers]

On Mon, Oct 19, 2026 at 09:17:23PM +0300, Jarkko Sakkinen wrote:
> Add the missing overflow checks for user->qnkeys and user->qnbytes
> in order keep calculations within INT_MAX range, which is the
> absolute maximum quota.
> 
> Cc: stable at vger.kernel.org
> Assisted-by: LLM
> Fixes: 7e047ef5fe2d ("[PATCH] keys: sort out key quota system")
> Reviewed-by: David Howells <dhowells at redhat.com>
> Signed-off-by: Jarkko Sakkinen <jarkko at kernel.org>

Don't keyctl_chown_key() and key_payload_reserve() need similar fixes?

- Eric