Linux Kernel up to 6.18.15/6.19.5 drm_gem_shmem_madvise_locked privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.15/6.19.5. The impacted element is the function drm_gem_shmem_madvise_locked. This manipulation causes an unknown weakness. This vulnerability appears as CVE-2025-71298. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.18.15/6.19.5 and classified as critical. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/tests: shmem: Hold reservation lock around madvise Acquire and release the GEM object's reservation lock around calls to the object's madvide operation. The tests use drm_gem_shmem_madvise_locked(), which led to errors such as show below. [ 58.339389] WARNING: CPU: 1 PID: 1352 at drivers/gpu/drm/drm_gem_shmem_helper.c:499 drm_gem_shmem_madvise_locked+0xde/0x140 Only export the new helper drm_gem_shmem_madvise() for Kunit tests. This is not an interface for regular drivers.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-71298 since 05/06/2026. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/08/2026).

Upgrading to version 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch 9cc77691b5fd615625955cedf726da57543088f1/07cfcab370da06f26c273306571cbb0bfa3b9c52/607d07d8cc0b835a8701259f08a03dc149b79b4f 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 vulnerability database at CERT Bund (WID-SEC-2026-1454). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Microsoft Azure Linux
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: Privilege escalation
CWE: Unknown
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.16/6.19.6
Patch: 9cc77691b5fd615625955cedf726da57543088f1/07cfcab370da06f26c273306571cbb0bfa3b9c52/607d07d8cc0b835a8701259f08a03dc149b79b4f

Timelineinfo

05/06/2026 CVE reserved
05/08/2026 +2 days Advisory disclosed
05/08/2026 +0 days VulDB entry created
07/08/2026 +61 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71298 (🔒)
GCVE (CVE): GCVE-0-2025-71298
GCVE (VulDB): GCVE-100-362083
CERT Bund: WID-SEC-2026-1454 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/08/2026 16:13
Updated: 07/08/2026 12:51
Changes: 05/08/2026 16:13 (57), 05/17/2026 23:36 (10), 06/15/2026 16:28 (7), 07/08/2026 12:51 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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