CVE-2023-53356 — usb: gadget: u_serial: Add null pointer check in gserial_suspend
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_suspend Consider a case where gserial_disconnect h…
Published: 2025-09-17 · CVSS: 5.5 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_suspend Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference. Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7