Linux kernel vulnerabilities

2013-04-08T00:00:00
ID USN-1793-1
Type ubuntu
Reporter Ubuntu
Modified 2013-04-08T00:00:00

Description

Emese Revfy discovered that in the Linux kernel signal handlers could leak address information across an exec, making it possible to by pass ASLR (Address Space Layout Randomization). A local user could use this flaw to by pass ASLR to reliably deliver an exploit payload that would otherwise be stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel’s tmpfs filesystem. A local user could exploit this flaw to gain privileges or cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel’s keyring. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-1792)

Mathias Krause discovered a memory leak in the Linux kernel’s crypto report API. A local user with CAP_NET_ADMIN could exploit this leak to examine some of the kernel’s stack memory. (CVE-2013-2546)

Mathias Krause discovered a memory leak in the Linux kernel’s crypto report API. A local user with CAP_NET_ADMIN could exploit this leak to examine some of the kernel’s heap memory. (CVE-2013-2547)

Mathias Krause discovered information leaks in the Linux kernel’s crypto algorithm report API. A local user could exploit these flaws to leak kernel stack and heap memory contents. (CVE-2013-2548)