ASA-201612-5 log original external raw

Arch Linux Security Advisory ASA-201612-5 ========================================= Severity: High Date : 2016-12-06 CVE-ID : CVE-2016-8655 Package : linux-grsec Type : privilege escalation Remote : No Link : https://security.archlinux.org/AVG-97 Summary ======= The package linux-grsec before version 1:4.8.12.r201612031658-2 is vulnerable to privilege escalation. Resolution ========== Upgrade to 1:4.8.12.r201612031658-2. # pacman -Syu "linux-grsec>=1:4.8.12.r201612031658-2" The problem has been fixed upstream but no release is available yet. Workaround ========== None. Description =========== A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets implementation in the Linux kernel networking subsystem handled synchronization while creating the TPACKET_V3 ring buffer. A local user able to open a raw packet socket (requires the CAP_NET_RAW capability) could use this flaw to elevate their privileges on the system. Impact ====== A local unprivileged attacker is able to crash the system or run arbitrary code with administrative privileges. References ========== https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c http://seclists.org/oss-sec/2016/q4/607 https://security.archlinux.org/CVE-2016-8655