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Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20261019142516.300040-6-jarkko@kernel.org> References: <20261019142516.300040-6-jarkko@kernel.org> <20261019142516.300040-1-jarkko@kernel.org> To: Jarkko Sakkinen Cc: dhowells@redhat.com, keyrings@vger.kernel.org, Eric Biggers , stable@vger.kernel.org, Paul Moore , James Morris , "Serge E. Hallyn" , Andrew Morton , linux-security-module@vger.kernel.org (open list:SECURITY SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: Re: [RFC PATCH 5/8] KEYS: Prevent overflow of quota in key_alloc() X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2610079.1792424447.1@warthog.procyon.org.uk> Date: Mon, 19 Oct 2026 16:40:47 +0100 Message-ID: <2610080.1792424447@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Jarkko Sakkinen wrote: > - if (desclen > U16_MAX) This should also be KEY_MAX_DESC_SIZE. > + if (desclen > U16_MAX || type->def_datalen > INT_MAX - desclen - 1) That looks awkward, but I can see why you did it. Reviewed-by: David Howells