Juniper warned Thursday of a high-risk bug in the GD graphics library used in several versions of its Junos OS.

Ubuntu fixed a Linux bug that could have let an attacker cause a denial of service or execute arbitrary code with a TCP payload this week.

A high-severity vulnerability in sudo has been patched in a number of Linux distributions; the flaw allows local attackers to elevate privileges to root.

Debian developers are recommending that the Cryptkeeper Linux encryption app be pulled from the distribution after a universal password was found.

A vulnerability in cryptsetup, a utility used to set up encrypted filesystems on Linux distributions, could allow an attacker to retrieve a root rescue shell on some systems.

A privilege escalation vulnerability, nicknamed Dirty Cow and present in Linux since 2007, has been used in public attacks against web-facing Linux servers.