Bug#978753: usercopy: Kernel memory exposure attempt

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#978753: usercopy: Kernel memory exposure attempt
Date	2020-12-31 14:40 +0100
Message-ID	<Bs6lj-Tq-1@gated-at.bofh.it> (permalink)
References	<Bs3GO-7Gw-3@gated-at.bofh.it> <Bs3GO-7Gw-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Markus,

Thanks for your report.

On Thu, Dec 31, 2020 at 12:45:47PM +0200, Markus Bäcklund wrote:
> Package: src:linux-image-4.19.0-13-amd64
> Version: 4.19.160-2
> Severity: critical
> Justification: breaks the whole system
> 
> 
> 
> -- Package-specific info:
> ** Kernel log: boot messages should be attached
> 
> 
> -- System Information:
> Debian Release: 10.7
>   APT prefers stable-updates
>   APT policy: (500, 'stable-updates'), (500, 'stable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 5.4.86 (SMP w/4 CPU cores)
> Kernel taint flags: TAINT_UNSIGNED_MODULE

5.4.86 is not a Debian kernel in buster and was tainted. Can you
please provide the kernel logs as well? This might give some better
clue.

Regards,
Salvatore

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Bug#978753: usercopy: Kernel memory exposure attempt Salvatore Bonaccorso <carnil@debian.org> - 2020-12-31 14:40 +0100
  Bug#978753: usercopy: Kernel memory exposure attempt Markus Bäcklund <markus.backlund@pp.inet.fi> - 2021-01-07 14:00 +0100

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