CVE-2011-1776

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.1Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
42.2%
KEV
Not listed

Published

September 6, 2011

Last Modified

April 29, 2026

Advisory Details (6)

Auto-updated May 29, 2026
Patch available. Sources: redhat.
generic

oss-security - Re: CVE request: kernel: validate size of EFI GUID partition entries

http://openwall.com/lists/oss-security/2011/05/10/4
redhat Patch Available

703026 – (CVE-2011-1776) CVE-2011-1776 kernel: validate size of EFI GUID partition entries

Affected: Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via

https://bugzilla.redhat.com/show_bug.cgi?id=703026
generic
http://www.securityfocus.com/bid/47796
generic
http://www.pre-cert.de/advisories/PRE-SA-2011-04.txt
generic

linux kernel 2.6.38.8 information disclosure, denial-of-service - CXSecurity.com

http://securityreason.com/securityalert/8369
generic
http://rhn.redhat.com/errata/RHSA-2011-0927.html

Vendor Advisories for CVE-2011-1776(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.38-1209-omap4 (2.6.38-1209.16) @ natty2026-05-29ubuntu
ubuntulinux-image-2.6.35-903-omap4 (2.6.35-903.25) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.35-30-powerpc (2.6.35-30.60) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.38-12-generic (2.6.38-12.51~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-33-sparc64-smp (2.6.32-33.70) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-217-dove (2.6.32-217.34) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.38-10-generic (2.6.38-10.46) @ natty2026-05-29ubuntu
ubuntulinux-image-2.6.32-317-ec2 (2.6.32-317.36) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.24-29-lpiacompat (2.6.24-29.94) @ hardy2026-05-29ubuntu
ubuntulinux-image-2.6.32-417-dove (2.6.32-417.34) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.35-30-virtual (2.6.35-30.60~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.31-611-imx51 (2.6.31-611.29) @ lucid2026-05-29ubuntu
redhatkernel-rt-0:2.6.33.9-rt31.75.el6rt2011-09-12redhat
redhatkernel-0:2.6.32-131.12.1.el62011-08-23redhat
redhatkernel-0:2.6.18-238.19.1.el52011-07-15redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(13)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-07-23 01:05 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2011-1776?
CVE-2011-1776 is a medium vulnerability published on September 6, 2011. The isgptvalid 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…
When was CVE-2011-1776 disclosed?
CVE-2011-1776 was first published in the National Vulnerability Database on September 6, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-1776 actively exploited?
CVE-2011-1776 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 42.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-1776?
CVE-2011-1776 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2011-1776?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1776, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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