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] [day] [month] [year] [list]
Date:   Wed, 2 Sep 2020 16:57:49 +0200
From:   Daniel Borkmann <>
To:     Magnus Karlsson <>,,,,
Subject: Re: [PATCH bpf-next] xsk: fix possible segfault in xsk umem

On 9/2/20 10:52 AM, Magnus Karlsson wrote:
> Fix possible segfault in the xsk diagnostics code when dumping
> information about the umem. This can happen when a umem has been
> created, but the socket has not been bound yet. In this case, the xsk
> buffer pool does not exist yet and we cannot dump the information
> that was moved from the umem to the buffer pool. Fix this by testing
> for the existence of the buffer pool and if not there, do not dump any
> of that information.
> Signed-off-by: Magnus Karlsson <>
> Reported-by:
> Fixes: c2d3d6a47462 ("xsk: Move queue_id, dev and need_wakeup to buffer pool")
> Fixes: 7361f9c3d719 ("xsk: Move fill and completion rings to buffer pool")

Applied, thanks!

Powered by blists - more mailing lists