# 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.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Sep 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-568c-8p2x-qrp5

## 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 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2011-1776?

It affects 6 products.


Products: 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.

## 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

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1776 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2011-1776 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2011-1776/ (Markdown: https://insights.sbomify.com/CVE-2011-1776/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1776
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1776
- OSV: https://osv.dev/vulnerability/CVE-2011-1776

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1776/
Summaries are generated and may contain mistakes; the official description above is the record.