Linux Kernel ptrace/sysret - Local Privilege Escalation Exploit

The Linux kernel before 3.15.4 on Intel processors does not properly restrict use of a non-canonical value for the saved RIP address in the case of a system call that does not use IRET, which allows local users to leverage a race condition and gain privileges, or cause a denial of service double...

Linux Kernel ptrace/sysret Local Privilege Escalation

/ CVE-2014-4699 ptrace/sysret PoC by Vitaly Nikolenko [email protected] gcc -O2 pocv0.c This code is kernel specific. On Ubuntu 12.04.0 LTS 3.2.0-23-generic, the following will trigger the GP in sysret and overwrite the PF handler so we can land to our NOP sled mapped at 0x80000000. However, onc...

kernel security and bug fix update

2.6.9-89.0.20.0.1.EL - fix skb alignment that was causing sendto to fail with EFAULT Olaf Kirch orabug 6845794 - fix enomem due to larger mtu size page alloc Zach Brown orabug 5486128 - backout patch sysrq-b that queues upto keventd thread Guru Anbalagane orabug 6125546 - netrx/netpoll race...