medium5.5
CVE-2023-53356
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 gser…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.8 before 5.10.188 from 5.11 before 5.15.121 from 5.16 before 6.1.39 from 6.2 before 6.4.4 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e
- https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a
- https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962
- https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f
- https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04