From: "Toke Høiland-Jørgensen" <toke@toke.dk>
To: Pengpeng Hou <pengpeng@iscas.ac.cn>
Cc: Pengpeng Hou <pengpeng@iscas.ac.cn>,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] wifi: ath9k: validate RX stream lengths before copying
Date: Fri, 04 Sep 2026 13:59:49 +0200 [thread overview]
Message-ID: <87qzj9tefe.fsf@toke.dk> (raw)
In-Reply-To: <20260701053823.49801-1-pengpeng@iscas.ac.cn>
Pengpeng Hou <pengpeng@iscas.ac.cn> writes:
> ath9k_hif_usb_rx_stream() reads RX stream headers and copies payload
> bytes from the current skb into newly allocated skbs. It also completes
> packets that span two URBs by copying the remaining bytes from the next
> skb into hif_dev->remain_skb.
>
> The parser checked the stream tag and an upper bound on pkt_len, but it
> did not first prove that the fixed header, the non-fragmented payload,
> or the bytes needed to complete a fragmented packet are present in the
> current skb. Reject malformed RX stream data before reading or copying
> beyond the received buffer.
>
> Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
next prev parent reply other threads:[~2026-09-04 11:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 5:38 [PATCH] wifi: ath9k: validate RX stream lengths before copying Pengpeng Hou
2026-09-04 11:59 ` Toke Høiland-Jørgensen [this message]
2026-09-08 22:20 ` Jeff Johnson
2026-09-09 10:43 ` Toke Høiland-Jørgensen
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