CVE-2011-1776: Linux Kernel

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: before 2.6.39 (fixed in 2.6.39)
• Red Hat Enterprise Linux Desktop: version 5.0 only
• Red Hat Enterprise Linux Server: version 5.0 only
• Red Hat Enterprise Linux Server Aus: version 5.6 only
• Red Hat Enterprise Linux Server Eus: version 5.6 only
• Red Hat Enterprise Linux Workstation: version 5.0 only

Published 2011-09-06. Last modified 2026-06-16.