CVE-2013-0268: Medium severity linux kernel vulnerability
Access to /dev/cpu//msr was protected only using filesystem checks. A local uid 0 (root) user with all capabilities dropped could use this flaw to execute arbitrary code in kernel mode.
Upstream commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=c903f0456bc69176912dee6dd25c6a66ee1aed00
References: http://grsecurity.net/~spender/msr32.c
Other sources
The msropen function in arch/x86/kernel/msr.c in the Linux kernel before 3.7.6 allows local users to bypass intended capability restrictions by executing a crafted application as root, as demonstrated by msr32.c.
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2013-0268?
CVE-2013-0268 has a high severity rating due to its potential for local privilege escalation, allowing a root user to execute arbitrary code in kernel mode.
How do I fix CVE-2013-0268?
To fix CVE-2013-0268, you should upgrade your Linux kernel to a version that includes the patch, such as 5.10.223-1 or later.
Which Linux versions are affected by CVE-2013-0268?
CVE-2013-0268 affects Linux kernel versions up to and including 3.7.4.
What kind of vulnerability is CVE-2013-0268?
CVE-2013-0268 is a local privilege escalation vulnerability that can be exploited by a malicious user with root access.
Is there a workaround for CVE-2013-0268 while waiting for a patch?
There are no effective workarounds for CVE-2013-0268; the recommended action is to upgrade to a patched kernel version.