# CVE-2023-0179: Integer overflow in kernel

> A buffer overflow in the Linux kernel Netfilter subsystem allows local attackers to leak memory addresses and escalate privileges to root via arbitrary code execution.

- **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:** 27 Mar 2023
- **Updated:** 19 Feb 2025
- **Also known as:** AZL-25932, DEBIAN-CVE-2023-0179, SUSE-SU-2023:0523-1, SUSE-SU-2023:0564-1, SUSE-SU-2023:0635-1, UBUNTU-CVE-2023-0179, USN-5857-1

## What is CVE-2023-0179?

CVE-2023-0179 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 27 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to the root user via arbitrary code execution.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2023-0179?

It affects 13 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `kernel-livepatch-SLE15-SP3_Update_27` | SUSE:Linux Enterprise Live Patching 15 SP3 | All versions | 2-150300.2.1 |
| `kernel-livepatch-SLE15-SP3_Update_28` | SUSE:Linux Enterprise Live Patching 15 SP3 | All versions | 2-150300.2.1 |
| `kernel-livepatch-SLE15-SP4-RT_Update_1` | SUSE:Linux Enterprise Live Patching 15 SP4 | All versions | 3-150400.2.1 |

Products: Canonical Ubuntu Linux, Fedoraproject Fedora, Linux kernel, Redhat Codeready Linux Builder, Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Power Little Endian, Redhat Enterprise Linux for Power Little Endian Eus, Redhat Enterprise Linux for Real Time, Redhat Enterprise Linux for Real Time for Nfv, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server for Power Little Endian Update Services for Sap Solutions.

## How do I fix CVE-2023-0179?

Apply the vendor's patch.

## Is CVE-2023-0179 being exploited?

There is no known exploitation of CVE-2023-0179 in the wild and no public exploit code.

Public exploit code:

- https://github.com/TurtleARM/CVE-2023-0179-PoC (github_poc): https://github.com/TurtleARM/CVE-2023-0179-PoC
- 针对（CVE-2023-0179）漏洞利用  该漏洞被分配为CVE-2023-0179，影响了从5.5到6.2-rc3的所有Linux版本，该漏洞在6.1.6上被测试。  漏洞的细节和文章可以在os-security上找到。 (github_poc): https://github.com/H4K6/CVE-2023-0179-PoC
- https://github.com/prabeershakya/CVE-2023-0179-POC- (github_poc): https://github.com/prabeershakya/CVE-2023-0179-POC-
- https://github.com/shakyanayann/CVE-2023-0179 (github_poc): https://github.com/shakyanayann/CVE-2023-0179

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0179 and fix it if it is affected.

What it is: CVE-2023-0179 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 27 Mar 2023. 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-2023-0179 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-2023-0179/ (Markdown: https://insights.sbomify.com/CVE-2023-0179/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0179
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0179
- OSV: https://osv.dev/vulnerability/CVE-2023-0179

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0179/
Summaries are generated and may contain mistakes; the official description above is the record.