From: Jakub Kicinski <kuba@kernel.org>
To: David Howells <dhowells@redhat.com>
Cc: netdev@vger.kernel.org, Hyunwoo Kim <imv4bel@gmail.com>,
Marc Dionne <marc.dionne@auristor.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org,
Jeffrey Altman <jaltman@auristor.com>,
Jiayuan Chen <jiayuan.chen@linux.dev>,
stable@kernel.org
Subject: Re: [PATCH net 3/3] rxrpc: Fix RESPONSE packet verification to extract skb to a linear buffer
Date: Tue, 12 May 2026 17:06:50 -0700 [thread overview]
Message-ID: <20260512170650.4acfad72@kernel.org> (raw)
In-Reply-To: <20260511160753.607296-4-dhowells@redhat.com>
On Mon, 11 May 2026 17:07:49 +0100 David Howells wrote:
> This improves the fix for CVE-2026-43500.
>
> Fix the verification of RESPONSE packets to avoid the problem of
> overwriting a RESPONSE packet sent via splice to a local address by
> extracting the contents of the UDP packet into a kmalloc'd linear buffer
> rather than decrypting the data in place in the sk_buff (which may corrupt
> the original buffer).
net/rxrpc/conn_event.c:254:10: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
254 | return ret;
| ^~~
net/rxrpc/conn_event.c:250:9: note: initialize the variable 'ret' to silence this warning
250 | int ret;
| ^
| = 0
next prev parent reply other threads:[~2026-05-13 0:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 16:07 [PATCH net 0/3] rxrpc: Better fix for DATA/RESPONSE decrypt vs splice() David Howells
2026-05-11 16:07 ` [PATCH net 1/3] rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present David Howells
2026-05-11 16:07 ` [PATCH net 2/3] rxrpc: Fix DATA decrypt vs splice() by copying data to buffer in recvmsg David Howells
2026-05-12 7:58 ` Jeffrey Altman
2026-05-13 8:01 ` David Howells
2026-05-13 8:13 ` David Howells
2026-05-13 8:38 ` David Laight
2026-05-13 9:48 ` Jeffrey Altman
2026-05-12 13:38 ` David Laight
2026-05-12 16:52 ` David Howells
2026-05-12 21:36 ` David Laight
2026-05-11 16:07 ` [PATCH net 3/3] rxrpc: Fix RESPONSE packet verification to extract skb to a linear buffer David Howells
2026-05-12 8:22 ` Jeffrey Altman
2026-05-13 0:06 ` Jakub Kicinski [this message]
2026-05-13 7:35 ` David Howells
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