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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: <20261019142516.300040-9-jarkko@kernel.org> References: <20261019142516.300040-9-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" , linux-security-module@vger.kernel.org (open list:SECURITY SUBSYSTEM), linux-kernel@vger.kernel.org (open list) Subject: Re: [RFC PATCH 8/8] KEYS: Verify the key identity in __keyctl_unlink X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Date: Mon, 19 Oct 2026 16:55:13 +0100 Message-ID: <2610587.1792425313@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mimecast-MFC-PROC-ID: GGLO9vX-IhOoU_mUhJBKGm8coEEl1n-i70HqXOwG-Jw_1792425319 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-ID: <2610586.1792425313.1@warthog.procyon.org.uk> This will show it: keyctl newring ring_a @s keyctl newring ring_b @s A=`keyctl add user A ss %:ring_a` B=`keyctl add user A qq %:ring_b` keyctl newring R @s keyctl show keyctl link $A %:R keyctl show keyctl link $B %:R keyctl show keyctl unlink $A %:R keyctl show # R is now incorrectly empty Reviewed-by: David Howells