kernel: proc: protect mm start_code/end_code in /proc/pid/stat

The dotaskstat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the startcode and endcode fields in the /proc//stat file for a process executing a PIE...

kernel: proc: protect mm start_code/end_code in /proc/pid/stat

The dotaskstat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the startcode and endcode fields in the /proc//stat file for a process executing a PIE...