What is CVE-2011-1776?

CVE-2011-1776 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.1 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2011-1776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-1776?

CVE-2011-1776 has a CVSS score of 6.1 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2011-1776?

No patch is currently available for CVE-2011-1776. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-1776 actively exploited?

CVE-2011-1776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2011-1776

Medium

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.

Package Linux Kernel

Published 2011-09-06

Last modified 2026-04-29

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.1

out of 10

Medium

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-119

CVE-2011-1776 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2011-1776 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
http://rhn.redhat.com/errata/RHSA-2011-0927.html

Third Party Advisory
Securityreason
http://securityreason.com/securityalert/8369

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39

Release Notes Vendor Advisory
Pre-Cert
http://www.pre-cert.de/advisories/PRE-SA-2011-04.txt

Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/47796

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121
Patch
Kernel patch commit
http://openwall.com/lists/oss-security/2011/05/10/4
Patch
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=703026
Patch

Details

CVE ID CVE-2011-1776

Severity Medium

CVSS score 6.1 / 10

CVSS version 3.1

Published 2011-09-06

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-1776?

CVE-2011-1776 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.1 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2011-1776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-1776?

CVE-2011-1776 has a CVSS score of 6.1 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2011-1776?

No patch is currently available for CVE-2011-1776. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-1776 actively exploited?

No — CVE-2011-1776 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →