Linux kernel vulnerabilities

2012-11-30T00:00:00
ID USN-1644-1
Type ubuntu
Reporter Ubuntu
Modified 2012-11-30T00:00:00

Description

Brad Spengler discovered a flaw in the Linux kernel’s uname system call. An unprivileged user could exploit this flaw to read kernel stack memory. (CVE-2012-0957)

Dmitry Monakhov reported a race condition flaw the Linux ext4 filesystem that can expose stale data. An unprivileged user could exploit this flaw to cause an information leak. (CVE-2012-4508)

Rodrigo Freire discovered a flaw in the Linux kernel’s TCP illinois congestion control algorithm. A local attacker could use this to cause a denial of service. (CVE-2012-4565)

Mathias Krause discovered a flaw in the Linux kernel’s XFRM netlink interface. A local user with the NET_ADMIN capability could exploit this flaw to leak the contents of kernel memory. (CVE-2012-6536)

Mathias Krause discovered several errors in the Linux kernel’s xfrm_user implementation. A local attacker could exploit these flaws to examine parts of kernel memory. (CVE-2012-6537)

Mathias Krause discovered an information leak in the Linux kernel’s xfrm_user copy_to_user_auth function. A local user could exploit this flaw to examine parts of kernel heap memory. (CVE-2012-6538)

Dave Jones discovered that the Linux kernel’s socket subsystem does not correctly ensure the keepalive action is associated with a stream socket. A local user could exploit this flaw to cause a denial of service (system crash) by creating a raw socket. (CVE-2012-6657)

A flaw was discovered in the Linux kernels handling of memory ranges with PROT_NONE when transparent hugepages are in use. An unprivileged local user could exploit this flaw to cause a denial of service (crash the system). (CVE-2013-0309)

Mathias Krause discovered a flaw in xfrm_user in the Linux kernel. A local attacker with NET_ADMIN capability could potentially exploit this flaw to escalate privileges. (CVE-2013-1826)

An information leak was discovered in the Linux kernel’s /dev/dvb device. A local user could exploit this flaw to obtain sensitive information from the kernel’s stack memory. (CVE-2013-1928)