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  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:   Tue, 12 May 2020 20:19:57 -0700
From:   Yonghong Song <>
To:     Andrii Nakryiko <>, <>,
        <>, <>, <>
CC:     <>, <>
Subject: Re: [PATCH bpf] bpf: fix bug in mmap() implementation for BPF array

On 5/12/20 4:59 PM, Andrii Nakryiko wrote:
> mmap() subsystem allows user-space application to memory-map region with
> initial page offset. This wasn't taken into account in initial implementation
> of BPF array memory-mapping. This would result in wrong pages, not taking into
> account requested page shift, being memory-mmaped into user-space. This patch
> fixes this gap and adds a test for such scenario.
> Fixes: fc9702273e2e ("bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY")
> Signed-off-by: Andrii Nakryiko <>
Acked-by: Yonghong Song <>

Powered by blists - more mailing lists