Hello Mike; thanks for all help and I checked /boot
$ ls /boot/ config-3.16.0-4-amd64 grub initrd.img-3.16.0-4-amd64 System.map-3.16.0-4-amd64 vmlinuz-3.16.0-4-amd64 $ sudo update-grub [sudo] password for x: Generating grub configuration file ... Found background image: /usr/share/images/desktop-base/desktop-grub.png Found linux image: /boot/vmlinuz-3.16.0-4-amd64 Found initrd image: /boot/initrd.img-3.16.0-4-amd64 done So, I'm shared below apt policy: $ apt-cache policy linux-image-3.16.0-4-amd64 linux-image-3.16.0-4-amd64: Installed: 3.16.36-1+deb8u2 Candidate: 3.16.36-1+deb8u2 Version table: *** 3.16.36-1+deb8u2 0 500 http://security.debian.org/ jessie/updates/main amd64 Packages 100 /var/lib/dpkg/status 3.16.36-1+deb8u1 0 500 http://ftp.debian.org/debian/ jessie/main amd64 Packages 3.16.7-ckt25-2 0 500 http://ftp.debian.org/debian/ jessie-updates/main amd64 Packages Regards, Ozgur 2016-11-07 20:18 GMT+03:00 Mike Oliver <m...@mopmeat.net>: > Can we confirm whether or not the kernel is already installed? Is the > newest version in the kernel in /boot? It's unclear from what's been said > if the system has even been rebooted into the updated kernel. > > > > On 11/07/2016 08:55 AM, Eduardo M KALINOWSKI wrote: > >> On Seg, 07 Nov 2016, Ozgur wrote: >> >>> I updated the Debian system and again exploit it successful. >>> >> >> No, you didn't. (Well, kinda) >> >> $ uname -ar >>> Linux x 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 >>> GNU/Linux >>> >> >> That's not the latest version, and specifically is not the one in which >> that vulnerability was fixed. You should have version 3.16.36-1+deb8u2 . >> >> ~$ cat /etc/apt/sources.list >>> >>> deb http://security.debian.org/ jessie/updates main contrib >>> deb-src http://security.debian.org/ jessie/updates main contrib >>> >>> deb http://ftp.debian.org/debian/ jessie-updates main contrib >>> deb-src http://ftp.debian.org/debian/ jessie-updates main contrib >>> >>> deb http://ftp.debian.org/debian/ jessie main contrib >>> deb-src http://ftp.debian.org/debian/ jessie main contrib >>> >> >> Your sources seem correct, though. What does "apt-cache policy >> linux-image-3.16.0-4-amd64" says? >> >> > -- Ozgur