# CVE-2010-2943: Information disclosure in n/a

> Remote authenticated users can read unlinked files or overwrite disk blocks via stale NFS filehandles due to missing inode allocation checks in XFS.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Sep 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-hm34-64r3-w24r

## What is CVE-2010-2943?

CVE-2010-2943 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 30 Sep 2010. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The xfs implementation in the Linux kernel before 2.6.35 does not look up inode allocation btrees before reading inode buffers, which allows remote authenticated users to read unlinked files, or read or overwrite disk blocks that are currently assigned to an active file but were previously assigned to an unlinked file, by accessing a stale NFS filehandle.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2010-2943?

It affects 10 products.


Products: Avaya Aura Communication Manager, Avaya Aura Presence Services, Avaya Aura Session Manager, Avaya Aura System Manager, Avaya Aura System Platform, Avaya Aura Voice Portal, Avaya Iq, Canonical Ubuntu Linux, Linux kernel, Vmware Esx.

## How do I fix CVE-2010-2943?

Upgrade to a fixed version.

## Is CVE-2010-2943 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-2943 exists.

Public exploit code:

- XFS - Deleted Inode Local Information Disclosure (exploitdb)

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2010-2492](https://insights.sbomify.com/CVE-2010-2492/): Memory corruption in n/a (high 7.8)
- [CVE-2010-2798](https://insights.sbomify.com/CVE-2010-2798/): Null dereference in n/a (high 7.8)
- [CVE-2022-2249](https://insights.sbomify.com/CVE-2022-2249/): Avaya Aura Communication Manager Privilege Escalation Vulnerabilities (high 7.7)
- [CVE-2018-15617](https://insights.sbomify.com/CVE-2018-15617/): Communication Manager Denial of Service (medium 6.5)
- [CVE-2020-7029](https://insights.sbomify.com/CVE-2020-7029/): Avaya Product System Management Interface Cross-Site Request Forgery Vulnerability (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-2943 and fix it if it is affected.

What it is: CVE-2010-2943 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 30 Sep 2010. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-2943 exists.

Affected product: Canonical Ubuntu Linux. 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-2010-2943/ (Markdown: https://insights.sbomify.com/CVE-2010-2943/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-2943
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-2943
- OSV: https://osv.dev/vulnerability/CVE-2010-2943

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From sbomify Insights: https://insights.sbomify.com/CVE-2010-2943/
Summaries are generated and may contain mistakes; the official description above is the record.