# CVE-2022-2153: Null dereference in kernel

> A local attacker can trigger a kernel oops and denial of service via specific ioctl calls due to a NULL pointer dereference in KVM SynIC IRQ handling.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:** 31 Aug 2022
- **Updated:** 14 Oct 2026
- **Also known as:** AZL-10794, DEBIAN-CVE-2022-2153, GHSA-m5gv-cmjh-79r8, UBUNTU-CVE-2022-2153

## What is CVE-2022-2153?

CVE-2022-2153 is a medium-severity vulnerability in Debian Debian Linux, published on 31 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2022-2153?

It affects 4 products.


Products: Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Redhat Enterprise Linux.

## How do I fix CVE-2022-2153?

Apply the vendor's patch.

## Is CVE-2022-2153 being exploited?

There is no known exploitation of CVE-2022-2153 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-2153 and fix it if it is affected.

What it is: CVE-2022-2153 is a medium-severity vulnerability in Debian Debian Linux, published on 31 Aug 2022. 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-2022-2153 in the wild and no public exploit code.

Affected product: Debian Debian 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-2022-2153/ (Markdown: https://insights.sbomify.com/CVE-2022-2153/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-2153
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-2153
- OSV: https://osv.dev/vulnerability/CVE-2022-2153

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-2153/
Summaries are generated and may contain mistakes; the official description above is the record.