What’s Vulnerable › Vulnerabilities

CVE-2026-80676: Drivers: hv: vmbus: use generic driver_override infrastructure

• Severity: unknown
• 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: 2026-08-28 · updated 2026-10-21

Description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

Affected products

• Linux kernel: 4.20 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0e2f0833556c8c5269deb457b89d538644a3b747
• https://git.kernel.org/stable/c/2fb010ea7ca98cd09a6d365260b769f627e73a76
• https://git.kernel.org/stable/c/331d8900121a1d74ecd45cd2db742ddcb5a0a565
• https://git.kernel.org/stable/c/a1656234a4a2dc6e975546867887c5f63e4a90f0
• https://git.kernel.org/stable/c/d1cb12ae81d2f7a58b0b1cfb51862afca98e6058

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