CVE-2024-43883
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
In the Linux kernel, the USB vhci-hcd driver has a reference handling issue. At several places the driver carries stale pointers to references that can still be used. The fix ensures new references are gained before dropping old ones, closing ZDI-CAN-22273.
Risk Assessment
The vulnerability could lead to use-after-free, potentially causing system crash or privilege escalation in kernel context.
Recommendation
Update the Linux kernel to a patched version. Also monitor for similar races in the driver.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: usb: vhci-hcd: Do not drop references before new references are gained At a few places the driver carries stale pointers to references that can still be used. Make sure that does not happen. This strictly speaking closes ZDI-CAN-22273, though there may be similar races in the driver.