CVE-2023-53551
Medium
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_resume Consider a case where gserial_disconnect has already cleared gser->ioport. And if a wakeup interrupt triggers afterwards, gserial_resume gets called, which will lead to accessing of gser->ioport and thus causing null pointer dereference.Add a null pointer check to prevent this. Added a static spinlock to prevent gser->ioport from becoming null after the newly added check.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedOct 4, 2025
First seenOct 4, 2025
How to fix
Update
- linux linux_kernel5.10.171, 5.15.97, 6.1.15, 6.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.8 ≤ v < 5.10.171, 5.11 ≤ v < 5.15.97, 5.16 ≤ v < 6.1.15, 6.2 ≤ v < 6.2.2 | 5.10.171, 5.15.97, 6.1.15, 6.2.2 |
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