CVE-2011-1021 Privilege escalation in n/a
Local root users can modify arbitrary kernel memory via debugfs, enabling privilege escalation or code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1021?
CVE-2011-1021 is a low-severity vulnerability in Linux kernel, published on 21 Jun 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.
Weakness: CWE-264
Which versions are affected by CVE-2011-1021?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2011-1021?
Apply the vendor's patch.
Is CVE-2011-1021 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1021 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-42f2-xvqw-p5x2.