CVE-2023-53356
usb: gadget: u_serial: Add null pointer check in gserial_suspend
CVSS Score
5.5
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_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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 2788a3553f7497075653210b42e2aeb6ba95e28e aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < a8ea7ed644cbf6314b5b0136b5398754b549fb8f aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < e60a827ac074ce6bd58305fe5a86afab5fce6a04 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 374447e3367767156405bedd230c5d391f4b7962 aba3a8d01d623a5efef48ab8e78752d58d4c90c3 < 2f6ecb89fe8feb2b60a53325b0eeb9866d88909a
Linux / Linux
5.8
References
git.kernel.org: https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e git.kernel.org: https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f git.kernel.org: https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04 git.kernel.org: https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962 git.kernel.org: https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a