Red Hat Security Advisory 2016-2110-01 – The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.

Ubuntu Security Notice 3114-1 – Dawid Golunski discovered that the nginx package incorrectly handled log file permissions. A remote attacker could possibly use this issue to obtain root privileges.

Debian Linux Security Advisory 3701-1 – Dawid Golunski reported the nginx web server packages in Debian suffered from a privilege escalation vulnerability (www-data to root) due to the way log files are handled. This security update changes ownership of the /var/log/nginx directory root. In addition, /var/log/nginx has to be made accessible to local users, and local users may be able to read the log files themselves local until the next logrotate invocation.

Debian Linux Security Advisory 3700-1 – Multiple vulnerabilities have been discovered in Asterisk, an open source PBX and telephony toolkit, which may result in denial of service or incorrect certificate validation.

Red Hat Security Advisory 2016-2105-01 – The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.

Red Hat Security Advisory 2016-2106-01 – The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the way the Linux kernel’s memory subsystem handled the copy-on-write breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.