linux-kernel - Re: CVE-2023-52521: bpf: Annotate bpf_long_memcpy with data

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-next>] [day] [month] [year] [list]

Date: Tue, 5 Mar 2024 17:54:45 +0100
From: Michal Hocko <mhocko@...e.com>
To: cve@...nel.org, linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: CVE-2023-52521: bpf: Annotate bpf_long_memcpy with data_race

On Sat 02-03-24 22:53:05, Greg KH wrote:
> Description
> ===========
> 
> In the Linux kernel, the following vulnerability has been resolved:
> 
> bpf: Annotate bpf_long_memcpy with data_race
> 
> syzbot reported a data race splat between two processes trying to
> update the same BPF map value via syscall on different CPUs:
> 
>   BUG: KCSAN: data-race in bpf_percpu_array_update / bpf_percpu_array_update

I would like to dispute this CVE. It adds data_race annotation which
doesn't have any impact on the code generation.
-- 
Michal Hocko
SUSE Labs