Patches are available for a newly discovered Linux, BSD and Solaris vulnerability called Stack Clash that bypasses stack guard-page mitigations and enables root access.

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.

OpenSSH today released a patch for a critical vulnerability that could be exploited by an attacker to force a client to leak private cryptographic keys. The attacker would have to control a malicious server in order to force the client to give up the key, OpenSSH and researchers at Qualys said in separate advisories. Qualys’ security...