CVE-2011-1776 Memory corruption in n/a
A heap-based buffer overflow in the Linux kernel's GPT parser allows physically proximate attackers to cause a denial of service or read sensitive kernel memory via a crafted storage device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1776?
CVE-2011-1776 is a medium-severity memory corruption vulnerability in Linux kernel, published on 6 Sep 2011. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The is_gpt_valid function in fs/partitions/efi.c in the Linux kernel before 2.6.39 does not check the size of an Extensible Firmware Interface (EFI) GUID Partition Table (GPT) entry, which allows physically proximate attackers to cause a denial of service (heap-based buffer overflow and OOPS) or obtain sensitive information from kernel heap memory by connecting a crafted GPT storage device, a different vulnerability than CVE-2011-1577.
Weakness: CWE-119
Which versions are affected by CVE-2011-1776?
It affects 6 products.
Products include Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Workstation.
How do I fix CVE-2011-1776?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2011-1776 being exploited?
There is no known exploitation of CVE-2011-1776 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-568c-8p2x-qrp5.