CVE-2026-43263
Analyzed Analyzed - Analysis Complete
Null Pointer Dereference in Linux Kernel Wave5 Decoder

Publication date: 2026-05-06

Last updated on: 2026-05-08

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Fix Null reference while testing fluster When multi instances are created/destroyed, many interrupts happens and structures for decoder are removed. "struct vpu_instance" this structure is shared for all flow in the decoder, so if the structure is not protected by lock, Null dereference could happens sometimes. IRQ Handler was spilt to two phases and Lock was added as well.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-05-06
Last Modified
2026-05-08
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43263
EUVD
EUVD-2026-27660
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.19 (inc) to 6.19.6 (exc)
linux linux_kernel From 6.8 (inc) to 6.18.16 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in the Linux kernel's media chips-media wave5 driver. It involves a null reference error that can occur during the testing of the fluster component.

The issue arises when multiple instances are created and destroyed, causing many interrupts and removal of decoder structures. The "struct vpu_instance" is shared across all decoder flows, and if this structure is not properly protected by a lock, a null dereference can sometimes happen.

To fix this, the IRQ handler was split into two phases and a lock was added to protect the shared structure, preventing the null dereference.

Impact Analysis

This vulnerability can lead to a null pointer dereference in the Linux kernel's media driver, which may cause system instability or crashes when multiple decoder instances are created or destroyed.

Such crashes could potentially lead to denial of service conditions on affected systems, impacting availability.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-43263. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart