CVE-2023-54254

Local kernel compromise via leaked eviction resource

Published Dec 30, 2025 · Updated Dec 30, 2025

Resource leak in Linux 5.14.6 through 6.4.4 allows local users to corrupt kernel memory through DRM TTM eviction errors. In ttm_bo_evict, a non-EMULTIHOP failure from ttm_bo_handle_move_mem returned without freeing evict_mem, leaving an orphaned TTM resource that retains a dangling buffer-object pointer. Access to a DRM render node is required; repeated triggering exhausts GPU memory, and reuse of the dangling object enables kernel-memory reads, writes, control-flow corruption, hangs, or a kernel crash.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux 5.14.6 through 6.4.4 allows local users to corrupt kernel memory through DRM TTM eviction errors. In ttm_bo_evict, a non-EMULTIHOP failure from ttm_bo_handle_move_mem returned without freeing evict_mem, leaving an orphaned TTM resource that retains a dangling buffer-object pointer. Access to a DRM render node is required; repeated triggering exhausts GPU memory, and reuse of the dangling object enables kernel-memory reads, writes, control-flow corruption, hangs, or a kernel crash.

The record

CVE
CVE-2023-54254
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=403797925768d9fa870f5b1ebcd20016b397083b <6aea0032380bbb1efebd598ad733d16925167921
  2. Affected versionversion=403797925768d9fa870f5b1ebcd20016b397083b <7738335d73d0686ec8995e0448e5d1b48cffb2a4
  3. Affected versionversion=403797925768d9fa870f5b1ebcd20016b397083b <e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532
  4. Affected versionversion=403797925768d9fa870f5b1ebcd20016b397083b <e9c44738cb1f537b177cc1beabcf6913690460cd
  5. Affected versionversion=5.15
  6. Affected versionversion=6c68fbafb9cd13e13476043fd9f6e10f792f685a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=403797925768d9fa870f5b1ebcd20016b397083b <6aea0032380bbb1efebd598ad733d16925167921; version=403797925768d9fa870f5b1ebcd20016b397083b <7738335d73d0686ec8995e0448e5d1b48cffb2a4; version=403797925768d9fa870f5b1ebcd20016b397083b <e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532; version=403797925768d9fa870f5b1ebcd20016b397083b <e9c44738cb1f537b177cc1beabcf6913690460cd; version=5.15; version=6c68fbafb9cd13e13476043fd9f6e10f792f685a

Published CVSS scores

7.8LinuxCVSS: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.

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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

T1068Exploitation for Privilege Escalation
T1499Endpoint Denial of Service

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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