CVE-2023-53356
BaseFortify
Publication date: 2025-09-17
Last updated on: 2025-12-11
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 5.8 (inc) to 5.10.188 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.121 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.39 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.4.4 (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 gser->ioport pointer and then gserial_suspend is called afterward, the code attempts to access gser->ioport, which is now null. This leads to a null pointer dereference, potentially causing a kernel crash or instability. The fix involved adding a null pointer check and a static spinlock to prevent gser->ioport from becoming null after the check.
How can this vulnerability impact me? :
This vulnerability can cause a null pointer dereference in the Linux kernel, which may lead to a kernel crash or system instability. This could result in denial of service or unexpected behavior on systems using the affected usb gadget serial driver.