# CVE-2023-35823: Use after free in n/a

> A use-after-free in the Linux kernel saa7134 driver allows local attackers to execute arbitrary code or escalate privileges.

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/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:** 18 Jun 2023
- **Updated:** 5 May 2025
- **Also known as:** AZL-27245, CVE-2023-3327, DEBIAN-CVE-2023-35823, GHSA-97pm-8r38-gfm3, UBUNTU-CVE-2023-35823

## What is CVE-2023-35823?

CVE-2023-35823 is a high-severity use after free vulnerability in Debian Debian Linux, published on 18 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c.

Weakness: CWE-416 (Use After Free), CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2023-35823?

It affects 2 products.


Products: Debian Debian Linux, Linux kernel.

## How do I fix CVE-2023-35823?

Apply the vendor's patch.

## Is CVE-2023-35823 being exploited?

There is no known exploitation of CVE-2023-35823 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-2023-35823 and fix it if it is affected.

What it is: CVE-2023-35823 is a high-severity use after free vulnerability in Debian Debian Linux, published on 18 Jun 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-2023-35823 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-2023-35823/ (Markdown: https://insights.sbomify.com/CVE-2023-35823/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-35823
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-35823
- OSV: https://osv.dev/vulnerability/CVE-2023-35823

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-35823/
Summaries are generated and may contain mistakes; the official description above is the record.