CVE-2026-43105
Modified Modified - Updated After Analysis
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 memory leak of BO array in hang state The hang state's BO array is allocated separately with kzalloc() in vc4_save_hang_state() but never freed in vc4_free_hang_state(). Add the missing kfree() for the BO array before freeing the hang state struct.
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Meta Information
Published
2026-05-06
Last Modified
2026-06-01
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43105
EUVD
EUVD-2026-27620
Affected Vendors & Products
Showing 11 associated CPEs
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)
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Exploitability
CWE
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KEV
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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.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's drm/vc4 component. Specifically, the BO (Buffer Object) array allocated during the hang state is not properly freed, which means memory that should be released remains allocated. The issue occurs because the BO array is allocated with kzalloc() in the function vc4_save_hang_state() but is never freed in vc4_free_hang_state(). The fix involves adding the missing kfree() call to free the BO array before freeing the hang state structure.

Impact Analysis

The impact of this vulnerability is a memory leak in the Linux kernel, which can lead to increased memory usage over time. This could potentially degrade system performance or cause resource exhaustion if the hang state occurs frequently and the leaked memory accumulates. However, there is no indication that this vulnerability leads to privilege escalation or direct security breaches.

Compliance Impact

The provided information does not specify any impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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