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Re: Bug#978753: usercopy: Kernel memory exposure attempt



Control: reassign -1 src:linux 4.19.160-2

On Jo, 31 dec 20, 12:45:47, 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
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
> Shell: /bin/sh linked to /usr/bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
> 
> Versions of packages linux-image-4.19.0-13-amd64 depends on:
> ii  initramfs-tools [linux-initramfs-tool]  0.133+deb10u1
> ii  kmod                                    26-1
> ii  linux-base                              4.6
> 
> Versions of packages linux-image-4.19.0-13-amd64 recommends:
> ii  apparmor             2.13.2-10
> ii  firmware-linux-free  3.4
> 
> Versions of packages linux-image-4.19.0-13-amd64 suggests:
> pn  debian-kernel-handbook  <none>
> ii  grub-pc                 2.02+dfsg1-20+deb10u2
> pn  linux-doc-4.19          <none>
> 
> Versions of packages linux-image-4.19.0-13-amd64 is related to:
> pn  firmware-amd-graphics     <none>
> pn  firmware-atheros          <none>
> pn  firmware-bnx2             <none>
> pn  firmware-bnx2x            <none>
> pn  firmware-brcm80211        <none>
> pn  firmware-cavium           <none>
> pn  firmware-intel-sound      <none>
> pn  firmware-intelwimax       <none>
> pn  firmware-ipw2x00          <none>
> pn  firmware-ivtv             <none>
> pn  firmware-iwlwifi          <none>
> pn  firmware-libertas         <none>
> pn  firmware-linux-nonfree    <none>
> pn  firmware-misc-nonfree     <none>
> pn  firmware-myricom          <none>
> pn  firmware-netxen           <none>
> pn  firmware-qlogic           <none>
> pn  firmware-realtek          <none>
> pn  firmware-samsung          <none>
> pn  firmware-siano            <none>
> pn  firmware-ti-connectivity  <none>
> pn  xen-hypervisor            <none>
> 
> -- no debconf information
> 
> 
> Caused system halt with message:
> 
> usercopy: Kernel memory exposure attempt detected from SLUB object 'mm_struct(770:pm2-root.service)' (offset 272, size 320)!

-- 
Looking after bugs assigned to unknown or inexistent packages

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