CVE-2026-43104

Analyzed Analyzed - Analysis Complete

Memory Leak in Linux Kernel DRM VC4 Driver

Publication date: 2026-05-06

Last updated on: 2026-06-01

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Fix a memory leak in hang state error path When vc4_save_hang_state() encounters an early return condition, it returns without freeing the previously allocated `kernel_state`, leaking memory. Add the missing kfree() calls by consolidating the early return paths into a single place.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-06

Last Modified

2026-06-01

Generated

2026-07-06

AI Q&A

2026-05-06

EPSS Evaluated

2026-07-05

NVD

CVE-2026-43104

EUVD

EUVD-2026-27618

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	From 6.13 (inc) to 6.18.24 (exc)
linux	linux_kernel	From 6.19 (inc) to 6.19.14 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.83 (exc)
linux	linux_kernel	From 4.5 (inc) to 6.6.136 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-401	The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Attack-Flow Graph

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the drm/vc4 memory leak issue in the hang state error path has been fixed.

This fix involves adding missing kfree() calls to properly free allocated kernel memory in the vc4_save_hang_state() function.

Compliance Impact

The vulnerability described is a memory leak in the Linux kernel's drm/vc4 component. There is no information provided about any impact on data confidentiality, integrity, or availability that would relate to compliance with standards such as GDPR or HIPAA.

Since the vulnerability involves a memory leak without further details on data exposure or unauthorized access, it does not directly indicate an effect on compliance with common standards and regulations.

Executive Summary

This vulnerability exists in the Linux kernel's drm/vc4 component. Specifically, when the function vc4_save_hang_state() encounters an early return condition, it fails to free previously allocated memory called kernel_state. This results in a memory leak.

The fix involved adding the missing kfree() calls by consolidating the early return paths into a single place to ensure the allocated memory is properly freed.

Impact Analysis

The vulnerability causes a memory leak in the Linux kernel when certain error conditions occur in the drm/vc4 driver. Over time, this could lead to increased memory usage, potentially degrading system performance or causing instability if the leaked memory accumulates.

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