# CVE-2010-2798: Null dereference in n/a

> Local attackers can cause a kernel panic and denial of service by renaming files in a GFS2 filesystem due to a null pointer dereference.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 8 Sep 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-vhhv-wfqv-m6p9

## What is CVE-2010-2798?

CVE-2010-2798 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 8 Sep 2010. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The gfs2_dirent_find_space function in fs/gfs2/dir.c in the Linux kernel before 2.6.35 uses an incorrect size value in calculations associated with sentinel directory entries, which allows local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact by renaming a file in a GFS2 filesystem, related to the gfs2_rename function in fs/gfs2/ops_inode.c.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2010-2798?

It affects 15 products.


Products: Avaya Aura Communication Manager, Avaya Aura Presence Services, Avaya Aura Session Manager, Avaya Aura System Manager, Avaya Aura System Platform, Avaya Iq, Avaya Voice Portal, Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Opensuse Opensuse, Suse Linux Enterprise High Availability Extension, Suse Suse Linux Enterprise Desktop, Suse Suse Linux Enterprise Server, Vmware Esx.

## How do I fix CVE-2010-2798?

Upgrade to a fixed version.

## Is CVE-2010-2798 being exploited?

There is no known exploitation of CVE-2010-2798 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2010-2943](https://insights.sbomify.com/CVE-2010-2943/): Information disclosure in n/a (high 8.1)
- [CVE-2010-2492](https://insights.sbomify.com/CVE-2010-2492/): Memory corruption 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-2010-2798 and fix it if it is affected.

What it is: CVE-2010-2798 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 8 Sep 2010. 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-2010-2798 in the wild and no public exploit code.

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-2010-2798/ (Markdown: https://insights.sbomify.com/CVE-2010-2798/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-2798
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-2798
- OSV: https://osv.dev/vulnerability/CVE-2010-2798

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From sbomify Insights: https://insights.sbomify.com/CVE-2010-2798/
Summaries are generated and may contain mistakes; the official description above is the record.