CVE-2024-26715
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…
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182Patch
- https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751Patch
- https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316Patch
- https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7Patch
- https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568bPatch
- https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182Patch
- https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751Patch
- https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316Patch
- https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7Patch
- https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.