CVE-2011-1776

Name: CVE-2011-1776
Creator: NVD / NIST
Published: 2011-09-06T16:55:07.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.55%

Last modified Jun 16, 2026

CVE-2011-1776 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

0.55%

41.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.39
Redhat	Enterprise Linux Desktop	5.0
Redhat	Enterprise Linux Server	5.0
Redhat	Enterprise Linux Server Aus	5.6
Redhat	Enterprise Linux Server Eus	5.6
Redhat	Enterprise Linux Workstation	5.0

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
http://openwall.com/lists/oss-security/2011/05/10/4Mailing List, Patch, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2011-0927.htmlThird Party Advisory
http://securityreason.com/securityalert/8369Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Release Notes, Vendor Advisory
http://www.pre-cert.de/advisories/PRE-SA-2011-04.txtThird Party Advisory
http://www.securityfocus.com/bid/47796Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=703026Issue Tracking, Patch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
http://openwall.com/lists/oss-security/2011/05/10/4Mailing List, Patch, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2011-0927.htmlThird Party Advisory
http://securityreason.com/securityalert/8369Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39Release Notes, Vendor Advisory
http://www.pre-cert.de/advisories/PRE-SA-2011-04.txtThird Party Advisory
http://www.securityfocus.com/bid/47796Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=703026Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Sep 6, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1776?

How severe is CVE-2011-1776?

CVE-2011-1776 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1776?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1776?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST