Several security issues were fixed in the kernel.
An information leak was discovered in the Linux kernel when inotify is used to monitor the /dev/ptmx device. A local user could exploit this flaw to discover keystroke timing and potentially discover sensitive information like password length. (CVE-2013-0160)
5 March 2014
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in the kernel.
An information leak was discovered in the Linux kernel when inotify is used to monitor the /dev/ptmx device. A local user could exploit this flaw to discover keystroke timing and potentially discover sensitive information like password length. (CVE-2013-0160)
Vasily Kulikov reported a flaw in the Linux kernel’s implementation of ptrace. An unprivileged local user could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2013-2929)
Andrew Honig reported a flaw in the Linux Kernel’s kvm_vm_ioctl_create_vcpu function of the Kernel Virtual Machine (KVM) subsystem. A local user could exploit this flaw to gain privileges on the host machine. (CVE-2013-4587)
Andrew Honig reported a flaw in the apic_get_tmcct function of the Kernel Virtual Machine (KVM) subsystem if the Linux kernel. A guest OS user could exploit this flaw to cause a denial of service or host OS system crash. (CVE-2013-6367)
Nico Golde and Fabian Yamaguchi reported a flaw in the driver for Adaptec AACRAID scsi raid devices in the Linux kernel. A local user could use this flaw to cause a denial of service or possibly other unspecified impact. (CVE-2013-6380)
Nico Golde and Fabian Yamaguchi reported buffer underflow errors in the implementation of the XFS filesystem in the Linux kernel. A local user with CAP_SYS_ADMIN could exploit these flaw to cause a denial of service (memory corruption) or possibly other unspecified issues. (CVE-2013-6382)
Evan Huus reported a buffer overflow in the Linux kernel’s radiotap header parsing. A remote attacker could cause a denial of service (buffer over- read) via a specially crafted header. (CVE-2013-7027)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with ISDN sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7266)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with apple talk sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7267)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with ipx protocol sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7268)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with the netrom address family in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7269)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with packet address family sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7270)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with x25 protocol sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory. (CVE-2013-7271)
An information leak was discovered in the Linux kernel’s SIOCWANDEV ioctl call. A local user with the CAP_NET_ADMIN capability could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-1444)
An information leak was discovered in the wanxl ioctl function the Linux kernel. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-1445)
An information leak was discovered in the Linux kernel’s hamradio YAM driver for AX.25 packet radio. A local user with the CAP_NET_ADMIN capability could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2014-1446)
Matthew Thode reported a denial of service vulnerability in the Linux kernel when SELinux support is enabled. A local user with the CAP_MAC_ADMIN capability (and the SELinux mac_admin permission if running in enforcing mode) could exploit this flaw to cause a denial of service (kernel crash). (CVE-2014-1874)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.
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