netdev - RE: [PATCH v3 1/2] wifi: rtw88: fix incorrect error codes in rtw_debugfs_copy_from

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 27 Apr 2023 00:43:44 +0000
From:   Ping-Ke Shih <pkshih@...ltek.com>
To:     Zhang Shurong <zhang_shurong@...mail.com>
CC:     "tony0620emma@...il.com" <tony0620emma@...il.com>,
        "kvalo@...nel.org" <kvalo@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 1/2] wifi: rtw88: fix incorrect error codes in rtw_debugfs_copy_from_user



> -----Original Message-----
> From: Zhang Shurong <zhang_shurong@...mail.com>
> Sent: Thursday, April 27, 2023 1:02 AM
> To: Ping-Ke Shih <pkshih@...ltek.com>
> Cc: tony0620emma@...il.com; kvalo@...nel.org; davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
> pabeni@...hat.com; linux-wireless@...r.kernel.org; netdev@...r.kernel.org; linux-kernel@...r.kernel.org;
> Zhang Shurong <zhang_shurong@...mail.com>
> Subject: [PATCH v3 1/2] wifi: rtw88: fix incorrect error codes in rtw_debugfs_copy_from_user
> 
> If there is a failure during copy_from_user or user-provided data
> buffer is invalid, rtw_debugfs_copy_from_user should return negative
> error code instead of a positive value count.
> 
> Fix this bug by returning correct error code. Moreover, the check
> of buffer against null is removed since it will be handled by
> copy_from_user.
> 
> Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>

Reviewed-by: Ping-Ke Shih <pkshih@...ltek.com>

[...]