CVE-2024-26715
Description
In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend In current scenario if Plug-out and Plug-In performed continuously there could be a chance while checking for dwc->gadget_driver in dwc3_gadget_suspend, a NULL pointer dereference may occur. Call Stack: CPU1: CPU2: gadget_unbind_driver dwc3_suspend_common dwc3_gadget_stop dwc3_gadget_suspend dwc3_disconnect_gadget CPU1 basically clears the variable and CPU2 checks the variable. Consider CPU1 is running and right before gadget_driver is cleared and in parallel CPU2 executes dwc3_gadget_suspend where it finds dwc->gadget_driver which is not NULL and resumes execution and then CPU1 completes execution. CPU2 executes dwc3_disconnect_gadget where it checks dwc->gadget_driver is already NULL because of which the NULL pointer deference occur.
How to fix
- linux linux_kernel3.17, 4.5, 5.15.149, 6.1.79, 6.6.18, 6.7.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.16.81 ≤ v < 3.17, 4.4.178 ≤ v < 4.5, 4.6 ≤ v < 5.15.149, 5.16 ≤ v < 6.1.79, 6.2 ≤ v < 6.6.18, 6.7 ≤ v < 6.7.6, 6.8 | 3.17, 4.5, 5.15.149, 6.1.79, 6.6.18, 6.7.6 |
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