CVE-2023-53551
usb: gadget: u_serial: Add null pointer check in gserial_resume
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 4, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < c5360eec648bd506afa304ae4a71f82e13d41897 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 3b24c980dc07be4550a9d1450ed7057f882530e5 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < ec357cd3e8af614855d286dd378725cdc7264df6 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 44e004f757a7ae13dfebaadbcfdb1a6f98c10377 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 5ec63fdbca604568890c577753c6f66c5b3ef0b5
Linux / Linux
5.8
References
git.kernel.org: https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897 git.kernel.org: https://git.kernel.org/stable/c/3b24c980dc07be4550a9d1450ed7057f882530e5 git.kernel.org: https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6 git.kernel.org: https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377 git.kernel.org: https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5