# GSD-2022-1005353: ksmbd: fix heap-based overflow in set_ntacl_dacl()

> A heap-based overflow in the Linux kernel's ksmbd SMB server allows attackers to potentially execute code or escalate privileges.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Sep 2022

## What is GSD-2022-1005353?

GSD-2022-1005353 is a memory corruption vulnerability in Kernel, published on 16 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ksmbd: fix heap-based overflow in set_ntacl_dacl()

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
This ID is fixed in Linux Kernel version v5.19.2 by commit 8e33102309bd6839b2e2e158f93a7b378cb4655d, it was introduced in version v5.15 by commit e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9. For more details please see the references link.

## Which versions are affected by GSD-2022-1005353?

1 open source package ship an affected version, including Kernel.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Kernel` | Linux | All versions | None |

## How do I fix GSD-2022-1005353?

No fix has been published for GSD-2022-1005353 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1005353 being exploited?

There is no known exploitation of GSD-2022-1005353 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1005353 and fix it if it is affected.

What it is: GSD-2022-1005353 is a memory corruption vulnerability in Kernel, published on 16 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of GSD-2022-1005353 in the wild and no public exploit code.

Affected packages and fixed versions:
- Kernel (Linux): affected all versions; no fix listed

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/GSD-2022-1005353/ (Markdown: https://insights.sbomify.com/GSD-2022-1005353/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1005353

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1005353/
Summaries are generated and may contain mistakes; the official description above is the record.