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From: Greg KH <gregkh@linuxfoundation.org>
To: Adi Prasan <itsadi2409@gmail.com>
Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
	error27@gmail.com
Subject: Re: [PATCH] staging: rtl8723bs: fix ie_length bound check in rtw_cfg80211_inform_bss
Date: Sun, 20 Sep 2026 17:37:02 +0200	[thread overview]
Message-ID: <2026092053-rentable-affair-bfce@gregkh> (raw)
In-Reply-To: <20260920142849.294162-1-itsadi2409@gmail.com>

On Sun, Sep 20, 2026 at 02:28:49PM +0000, Adi Prasan wrote:
> The buffer bound check in rtw_cfg80211_inform_bss() only verifies
> that bssinf_len (ie_length + header size) does not exceed
> MAX_BSSINFO_LEN (1000 bytes), but network.ies[] is only MAX_IE_SZ
> (768) bytes. This allows ie_length values up to ~976 bytes to pass
> the check while a subsequent memcpy() from network.ies still reads
> only 768 valid bytes, and other paths that write to network.ies
> consistently cap ie_length to MAX_IE_SZ.

How was this found and tested?

thanks,

greg k-h

      reply	other threads:[~2026-09-20 15:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-20 14:28 Adi Prasan
2026-09-20 15:37 ` Greg KH [this message]

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