Linux : vmsplice local root exploit (Goodbye uptime)
As Linux kernel vmsplice local root exploit in the wild and the Debian boxes in my office is vulnerable to the exploit, I have decided to upgrade their kernels. It’s sad to see rock-solid Linux boxes went down for the 1st time after running stable nearly 8 months.
17:01:25 up 230 days, 9:59, 3 users, load average: 0.00, 0.00, 0.02
17:02:31 up 231 days, 7:02, 1 user, load average: 0.18, 0.38, 0.18
After upgrade
chflags@mzimyklosb03:~$ ./c
———————————–
Linux vmsplice Local Root Exploit
By qaaz
———————————–
[+] mmap: 0×0 .. 0×1000
[+] page: 0×0
[+] page: 0×20
[+] mmap: 0×4000 .. 0×5000
[+] page: 0×4000
[+] page: 0×4020
[+] mmap: 0×1000 .. 0×2000
[+] page: 0×1000
[+] mmap: 0xb7e64000 .. 0xb7e96000
[-] vmsplice: Bad address
chflags@mzimyklosb03:~$ uname -smr
Linux 2.6.24.2 i686
