CVE-2025-40111

Kernel memory access via stale validation node

Published Nov 12, 2025 · Updated Nov 12, 2025

Use-after-free in the Linux kernel vmwgfx driver allows local users to trigger stale validation-node access during command processing. vmw_validation_add_resource inserts an arena-allocated node into the duplicates hash table but, when its resource is already doomed, returns without removing the node; the arena is later cleared while the hash entry remains. Low-privileged local access is required, and public sources do not establish whether exploitation produces a crash, data access, or code execution.

CVSS severity7.3
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel vmwgfx driver allows local users to trigger stale validation-node access during command processing. vmw_validation_add_resource inserts an arena-allocated node into the duplicates hash table but, when its resource is already doomed, returns without removing the node; the arena is later cleared while the hash entry remains. Low-privileged local access is required, and public sources do not establish whether exploitation produces a crash, data access, or code execution.

The record

CVE
CVE-2025-40111
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.20
  2. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <1822e5287b7dfa59d0af966756ebf1dc652b60ee
  3. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <4c918f9d1ccccc0e092f43dcb2d8266f54d7340b
  4. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <655a2f29bfc21105c80bf8a7d7aafa6eca8b4496
  5. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <65608e991c2d771c13404e5c7ae122ac3c3357a4
  6. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <867bda5d95d36f10da398fd4409e21c7002b2332
  7. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <9a8eaca539708ca532747f606d231f70e684e8ca
  8. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <dfe1323ab3c8a4dd5625ebfdba44dc47df84512a
  9. Affected versionversion=64ad2abfe9a628ce79859d072704bd1ef7682044 <fb7165e5f3b3b10721ff70553583ad12e90e447a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <1822e5287b7dfa59d0af966756ebf1dc652b60ee; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <4c918f9d1ccccc0e092f43dcb2d8266f54d7340b; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <655a2f29bfc21105c80bf8a7d7aafa6eca8b4496; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <65608e991c2d771c13404e5c7ae122ac3c3357a4; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <867bda5d95d36f10da398fd4409e21c7002b2332; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <9a8eaca539708ca532747f606d231f70e684e8ca; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <dfe1323ab3c8a4dd5625ebfdba44dc47df84512a; version=64ad2abfe9a628ce79859d072704bd1ef7682044 <fb7165e5f3b3b10721ff70553583ad12e90e447a

Published CVSS scores

7.0OracleCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3CanonicalCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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