Linux Kernel up to 6.12.38/6.15.6 LMTT Page allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.12.38/6.15.6 and classified as problematic. Affected by this issue is some unknown functionality of the component LMTT Page Handler. This manipulation causes allocation of resources. This vulnerability is registered as CVE-2025-38511. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 6.12.38/6.15.6. Affected by this vulnerability is an unknown part of the component LMTT Page Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/xe/pf: Clear all LMTT pages on alloc Our LMEM buffer objects are not cleared by default on alloc and during VF provisioning we only setup LMTT PTEs for the actually provisioned LMEM range. But beyond that valid range we might leave some stale data that could either point to some other VFs allocations or even to the PF pages. Explicitly clear all new LMTT page to avoid the risk that a malicious VF would try to exploit that gap. While around add asserts to catch any undesired PTE overwrites and low-level debug traces to track LMTT PT life-cycle. (cherry picked from commit 3fae6918a3e27cce20ded2551f863fb05d4bef8d)

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2025-38511 since 04/16/2025. The exploitation appears to be difficult. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 272151 (SUSE SLES15 Security Update : kernel RT (Live Patch 0 for SLE 15 SP7) (SUSE-SU-2025:3886-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.39 or 6.15.7 eliminates this vulnerability. Applying the patch ff4b8c9ade1b82979fdd01e6f45b60f92eed26d8/5d21892c2e15b6a27f8bc907693eca7c6b7cc269/705a412a367f383430fa34bada387af2e52eb043 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (272151), EUVD (EUVD-2025-25087) and CERT Bund (WID-SEC-2025-1858). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • IBM Security Verify Access

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 272151
Nessus Name: SUSE SLES15 Security Update : kernel RT (Live Patch 0 for SLE 15 SP7) (SUSE-SU-2025:3886-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.39/6.15.7
Patch: ff4b8c9ade1b82979fdd01e6f45b60f92eed26d8/5d21892c2e15b6a27f8bc907693eca7c6b7cc269/705a412a367f383430fa34bada387af2e52eb043

Timelineinfo

04/16/2025 CVE reserved
08/16/2025 +122 days Advisory disclosed
08/16/2025 +0 days VulDB entry created
01/30/2026 +167 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38511 (🔒)
GCVE (CVE): GCVE-0-2025-38511
GCVE (VulDB): GCVE-100-320365
EUVD: 🔒
CERT Bund: WID-SEC-2025-1858 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 08/16/2025 13:30
Updated: 01/30/2026 17:10
Changes: 08/16/2025 13:30 (57), 08/16/2025 16:17 (1), 08/19/2025 09:25 (1), 09/28/2025 07:48 (7), 10/02/2025 22:37 (1), 10/12/2025 16:40 (1), 11/01/2025 17:54 (2), 11/01/2025 18:51 (1), 11/19/2025 00:51 (11), 01/30/2026 17:10 (1)
Complete: 🔍
Cache ID: 216::103

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