CVE-2026-43202
Analyzed Analyzed - Analysis Complete
vt8500lcdfb Missing DMA Buffer Free in Linux Kernel

Publication date: 2026-05-06

Last updated on: 2026-05-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: vt8500lcdfb: fix missing dma_free_coherent() fbi->fb.screen_buffer is allocated with dma_alloc_coherent() but is not freed if the error path is reached.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-11
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43202
EUVD
EUVD-2026-27765
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.2 (inc) to 6.6.128 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.75 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.16 (exc)
linux linux_kernel From 6.19 (inc) to 6.19.6 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.202 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.165 (exc)
linux linux_kernel From 3.7 (inc) to 5.10.252 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's fbdev vt8500lcdfb driver. Specifically, the screen buffer (fbi->fb.screen_buffer) is allocated using dma_alloc_coherent(), but if an error occurs, the allocated memory is not freed properly because dma_free_coherent() is missing in the error handling path.

Impact Analysis

Because the allocated DMA memory is not freed on error, this can lead to a memory leak in the kernel. Over time, this could degrade system performance or stability due to resource exhaustion.

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