From: Jarkko Sakkinen <jarkko@kernel.org>
To: David Howells <dhowells@redhat.com>
Cc: keyrings@vger.kernel.org, Eric Biggers <ebiggers@kernel.org>,
stable@vger.kernel.org, Paul Moore <paul@paul-moore.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
open list <linux-kernel@vger.kernel.org>,
"open list:SECURITY SUBSYSTEM"
<linux-security-module@vger.kernel.org>
Subject: Re: [PATCH v3 2/3] KEYS: Reject @desclen values >= KEY_MAX_DESC_SIZE in key_alloc()
Date: Tue, 20 Oct 2026 04:47:43 +0300 [thread overview]
Message-ID: <atbIP003h_YHofQb@kernel.org> (raw)
In-Reply-To: <20261020013903.1244157-3-jarkko@kernel.org>
On Tue, Oct 20, 2026 at 04:38:56AM +0300, Jarkko Sakkinen wrote:
> @desclen in key_alloc() is saved to the 16-bit wide desc_len field in
> struct keyring_index_key.
>
> Reject @desclen values at or above KEY_MAX_DESC_SIZE with -EINVAL in order
> to match the userspace limit. The constraints inherits from the one byte
> required for the NULL character.
>
> Cc: stable@vger.kernel.org
> Assisted-by: LLM
> Fixes: f771fde82051 ("keys: Simplify key description management")
> Reviewed-by: David Howells <dhowells@redhat.com>
> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This is now the only one, which does not have keyutils script in the
commit message so in that sense I think these fixes look pretty good.
Br, Jarkko
next prev parent reply other threads:[~2026-10-20 1:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-20 1:38 [PATCH v3 0/3] KEYS: rhashtable bug fixes Jarkko Sakkinen
2026-10-20 1:38 ` [PATCH v3 1/3] KEYS: Expand key->{datalen,quotalen} to unsigned int Jarkko Sakkinen
2026-10-20 1:46 ` sashiko-bot
2026-10-20 15:47 ` Eric Biggers
2026-10-20 15:56 ` Jarkko Sakkinen
2026-10-20 1:38 ` [PATCH v3 2/3] KEYS: Reject @desclen values >= KEY_MAX_DESC_SIZE in key_alloc() Jarkko Sakkinen
2026-10-20 1:47 ` Jarkko Sakkinen [this message]
2026-10-20 2:28 ` Eric Biggers
2026-10-20 10:57 ` Jarkko Sakkinen
2026-10-20 13:00 ` Jarkko Sakkinen
2026-10-20 15:50 ` Eric Biggers
2026-10-20 16:09 ` Jarkko Sakkinen
2026-10-20 1:51 ` sashiko-bot
2026-10-20 1:38 ` [PATCH v3 3/3] KEYS: Verify the key identity in __key_unlink_begin Jarkko Sakkinen
2026-10-20 1:44 ` sashiko-bot
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