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] [day] [month] [year] [list]
Date:   Thu, 16 May 2019 17:53:34 -0700
From:   Chenbo Feng <>
To:     Alexei Starovoitov <>,
        Chenbo Feng <>
Cc:     Network Development <>,
        Android Kernel Team <>,
        Lorenzo Colitti <>,
        Maciej ┼╗enczykowski <>,
        Daniel Borkmann <>,
        Alexei Starovoitov <>
Subject: Re: [PATCH bpf] bpf: relax inode permission check for retrieving bpf

On 5/16/19 11:35 AM, Alexei Starovoitov wrote:
> On Tue, May 14, 2019 at 7:43 PM Chenbo Feng <> wrote:
>> For iptable module to load a bpf program from a pinned location, it
>> only retrieve a loaded program and cannot change the program content so
>> requiring a write permission for it might not be necessary.
>> Also when adding or removing an unrelated iptable rule, it might need to
>> flush and reload the xt_bpf related rules as well and triggers the inode
>> permission check. It might be better to remove the write premission
>> check for the inode so we won't need to grant write access to all the
>> processes that flush and restore iptables rules.
>> Signed-off-by: Chenbo Feng <>
> Applied. The fix makes sense to me.

Thanks for accepting it Alexei, could you also queue it up for the 
stable as well?

Chenbo Feng

Powered by blists - more mailing lists