CVE-2023-53551
BaseFortify
Publication date: 2025-10-04
Last updated on: 2026-03-21
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 5.11 (inc) to 5.15.97 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.15 (exc) |
| linux | linux_kernel | From 5.8 (inc) to 5.10.171 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.2.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability occurs in the Linux kernel's USB gadget serial driver (u_serial). If the gserial_disconnect function has cleared the ioport pointer and then a wakeup interrupt triggers, the gserial_resume function may be called and attempt to access the now null ioport pointer. This leads to a null pointer dereference, which can cause a system crash or instability. The fix adds a null pointer check in gserial_resume and a static spinlock to prevent ioport from becoming null unexpectedly.
How can this vulnerability impact me? :
This vulnerability can cause a null pointer dereference in the Linux kernel, potentially leading to a system crash or instability when the USB gadget serial driver resumes after a disconnect. This could disrupt normal system operation or cause denial of service.