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CVE-2026-43263: media: chips-media: wave5: Fix Null reference while testing fluster

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-10-21
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 6.8 before 6.18.16; from 6.19 before 6.19.6 — fixed in 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 6.18.16, 6.19.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/925b8f99f92fc968990ebb4ec49c96ac2d4e600b
• https://git.kernel.org/stable/c/d12bcf183ec7da4305d848068d15f18044eaf62a
• https://git.kernel.org/stable/c/e66ff2b08e4ee1c4d3b84f24818e5bcc178cc3a4
• https://git.kernel.org/stable/c/ea316b784fe6a61b29131c98cddb24e651b1dcbc

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