# CVE-2022-0742: Memory leak in ICMP6 in Linux Kernel

> A remote attacker can cause a denial of service by exhausting memory via specific ICMP6 packets in the Linux Kernel.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Mar 2022
- **Updated:** 21 Apr 2025
- **Also known as:** AZL-9094, DEBIAN-CVE-2022-0742, GHSA-c2j9-m677-3m66, UBUNTU-CVE-2022-0742, USN-5346-1

## What is CVE-2022-0742?

CVE-2022-0742 is a critical denial of service vulnerability in Linux kernel, published on 18 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Memory leak in icmp6 implementation in Linux Kernel 5.13+ allows a remote attacker to DoS a host by making it go out-of-memory via icmp6 packets of type 130 or 131. We recommend upgrading past commit 2d3916f3189172d5c69d33065c3c21119fe539fc.

Weakness: CWE-401 (Missing Release of Memory after Effective Lifetime), CWE-275

## Which versions are affected by CVE-2022-0742?

It affects 14 products.


Products: Linux kernel, Netapp A400 Firmware, Netapp Aff 8300 Firmware, Netapp Aff 8700 Firmware, Netapp Fas 8300 Firmware, Netapp Fas 8700 Firmware, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware, Netapp H500e Firmware, Netapp H500s Firmware, Netapp H700e Firmware, Netapp H700s Firmware.

## How do I fix CVE-2022-0742?

Apply the vendor's patch.

## Is CVE-2022-0742 being exploited?

There is no known exploitation of CVE-2022-0742 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-2022-0742 and fix it if it is affected.

What it is: CVE-2022-0742 is a critical denial of service vulnerability in Linux kernel, published on 18 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-0742 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-2022-0742/ (Markdown: https://insights.sbomify.com/CVE-2022-0742/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-0742
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-0742
- OSV: https://osv.dev/vulnerability/CVE-2022-0742

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-0742/
Summaries are generated and may contain mistakes; the official description above is the record.