[PATCH v2 4/6] KEYS: Prevent overflow of quota in key_alloc()

[Eric Biggers]

On Mon, Oct 19, 2026 at 09:17:24PM +0300, Jarkko Sakkinen wrote:
> Check that the calculated quota length does not go over INT_MAX.
> 
> 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>

Seems this should be merged into patch 3?

Also is this reachable?  I.e. do any of the key types actually specify
def_datalen > INT_MAX - KEY_MAX_DESC_SIZE + 1?

- Eric