CVE-2026-43263
Null Pointer Dereference in Linux Kernel Wave5 Decoder
Publication date: 2026-05-06
Last updated on: 2026-05-06
Assigner: kernel.org
Description
Description
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Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
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AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.