The ssh-vulnkey tool on Ubuntu Linux 7.04, 7.10, and 8.04 LTS does not recognize authorizedkeys lines that contain options, which makes it easier for remote attackers to exploit CVE-2008-0166 by guessing a key that was not identified by this tool.

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1601) An error was found in the Linux kernel's IPv6 netfilter when connection tracking is enabled. A remote attacker could exploit this flaw to crash a system if it is using IPv6 with the nfcontrackipv6 kernel module loaded. (CVE-2012-2744)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. (CVE-2012-2313) Timo Warns reported multiple flaws in the Linux kernel's hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. (CVE-2012-2319)

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service.

Dan Rosenberg reported errors in the OSS (Open Sound System) MIDI interface. A local attacker on non-x86 systems might be able to cause a denial of service. (CVE-2011-1476) Dan Rosenberg reported errors in the kernel's OSS (Open Sound System) driver for Yamaha FM synthesizer chips. A local user can exploit this to cause memory corruption, causing a denial of service or privilege escalation. (CVE-2011-1477) Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM partitions. A local user could exploit this to cause a denial of service or escalate privileges. (CVE-2011-2182) A flaw was discovered in the Linux kernel's NFSv4 (Network File System version 4) file system. A local, unprivileged user could use this flaw to cause a denial of service by creating a file in a NFSv4 filesystem. (CVE-2011-4324) A flaw was found in how the linux kernel handles user-space held futexs. An unprivileged user could exploit this flaw to cause a denial of service or possibly elevate privileges. (CVE-2012-0028)