CVE-2026-74393
Received Received - Intake

Memory Leak in Linux Kernel DRM Syncobj

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/syncobj: Fix memory leak in drm_syncobj_find_fence() Commit 18226ba52159 ("drm/syncobj: reject invalid flags in drm_syncobj_find_fence") forgot to take into account the fact that drm_syncobj_find() takes a reference to syncobj and returns early without dropping the reference, leading to memory leaks. Reported by: Sam Spencer <sam.spencer@arm.com>

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-74393
EUVD
EUVD-2026-59540

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a memory leak vulnerability in the Linux kernel's drm_syncobj_find_fence() function. The issue occurs because a reference to a syncobj is taken but not properly released when the function returns early due to invalid flags, causing memory to be leaked.

Detection Guidance

This vulnerability is specific to the Linux kernel's drm/syncobj component and involves a memory leak in drm_syncobj_find_fence(). Detection requires checking kernel logs for memory leak warnings or using kernel debugging tools like kmemleak or ftrace to identify memory leaks in the drm_syncobj subsystem.

Impact Analysis

The memory leak could gradually consume system memory over time, potentially leading to performance degradation or system instability if exploited repeatedly. It primarily affects applications using the Linux kernel's DRM (Direct Rendering Manager) syncobj functionality.

Mitigation Strategies

Apply the latest kernel patch that resolves this issue. Update your Linux kernel to a version that includes commit 18226ba52159 or later. Monitor kernel logs for memory leak warnings related to drm_syncobj after applying the patch.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-74393. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart