Re: [PATCH] hooks: fix a missing-check bug in selinux_add_mnt_opt()

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To: Gen Zhang <blackgod016574@xxxxxxxxx>, paul@xxxxxxxxxxxxxx, sds@xxxxxxxxxxxxx, eparis@xxxxxxxxxxxxxx, ccross@xxxxxxxxxxx
Subject: Re: [PATCH] hooks: fix a missing-check bug in selinux_add_mnt_opt()
From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Date: Thu, 30 May 2019 12:11:33 +0300
Cc: selinux@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx
In-reply-to: <20190530080602.GA3600@zhanggen-UX430UQ>
References: <20190530080602.GA3600@zhanggen-UX430UQ>
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

Hello!

On 30.05.2019 11:06, Gen Zhang wrote:

In selinux_add_mnt_opt(), 'val' is allcoted by kmemdup_nul(). It returns


   Allocated?

NULL when fails. So 'val' should be checked.

Signed-off-by: Gen Zhang <blackgod016574@xxxxxxxxx>

[...]

MBR, Sergei

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