From: Leon Romanovsky <leon@kernel.org>
To: bvanassche@acm.org, jgg@ziepe.ca,
Sara Venkatesh <sarajvenkatesh@gmail.com>
Cc: dledford@redhat.com, linux-rdma@vger.kernel.org,
target-devel@vger.kernel.org, linux-kernel@vger.kernel.org,
carlos.bilbao@kernel.org
Subject: Re: [PATCH] RDMA/srpt: fix integer overflow in immediate data length check
Date: Tue, 12 May 2026 06:41:28 -0400 [thread overview]
Message-ID: <177858248804.2277752.12077743618929897915.b4-ty@kernel.org> (raw)
In-Reply-To: <20260504080036.3482415-1-sarajvenkatesh@gmail.com>
On Mon, 04 May 2026 01:00:36 -0700, Sara Venkatesh wrote:
> imm_buf->len is a user-controlled uint32_t received from the network.
> Adding it to imm_data_offset without overflow checking allows a
> malicious initiator to send len=0xFFFFFFFF, causing req_size to wrap
> around to a small value, bypassing the bounds check, and subsequently
> passing a ~4GB length to sg_init_one().
>
> Use check_add_overflow() to detect wrapping before the comparison.
>
> [...]
Applied, thanks!
[1/1] RDMA/srpt: fix integer overflow in immediate data length check
https://git.kernel.org/rdma/rdma/c/3f716b34c639f6
Best regards,
--
Leon Romanovsky <leon@kernel.org>
prev parent reply other threads:[~2026-05-12 10:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 8:00 [PATCH] RDMA/srpt: fix integer overflow in immediate data length check Sara Venkatesh
2026-05-04 8:17 ` Bart Van Assche
2026-05-05 0:11 ` Sara Venkatesh
2026-05-05 8:19 ` Bart Van Assche
2026-05-12 10:41 ` Leon Romanovsky [this message]
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