# CVE-2023-54260: cifs: Fix lost destroy smbd connection when MR allocate failed

- 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: 4.16

## Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbd_destroy() will directly return, then the connection info will be leaked. Let's set the smb direct connection info to the server before call smbd_destroy().

## 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.
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## 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/d303e25887127364a6765eaf7ac68aa2bac518a9
- https://git.kernel.org/stable/c/324c0c34fff1affd436e509325cb46739209704e
- https://git.kernel.org/stable/c/caac205e0d5b44c4c23a10c6c0976d50ebe16ac2
- https://git.kernel.org/stable/c/46cd6c639cddba2bd2d810ceb16bb20374ad75b0
- https://git.kernel.org/stable/c/c51ae01104b318bf15f3c5097faba5c72addba7a
- https://git.kernel.org/stable/c/04b7e13b8a13264282f874db5378fc3d3253cfac
- https://git.kernel.org/stable/c/e9d3401d95d62a9531082cd2453ed42f2740e3fd

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Page: https://cve.now/CVE-2023-54260
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