CVE-2023-53356 (GCVE-0-2023-53356)
Vulnerability from cvelistv5
Published
2025-09-17 14:56
Modified
2026-05-11 19:43
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: aba3a8d01d623a5efef48ab8e78752d58d4c90c3
Version: aba3a8d01d623a5efef48ab8e78752d58d4c90c3
Version: aba3a8d01d623a5efef48ab8e78752d58d4c90c3
Version: aba3a8d01d623a5efef48ab8e78752d58d4c90c3
Version: aba3a8d01d623a5efef48ab8e78752d58d4c90c3
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_serial: Add null pointer check in gserial_suspend\n\nConsider a case where gserial_disconnect has already cleared\ngser-\u003eioport. And if gserial_suspend gets called afterwards,\nit will lead to accessing of gser-\u003eioport and thus causing\nnull pointer dereference.\n\nAvoid this by adding a null pointer check. Added a static\nspinlock to prevent gser-\u003eioport from becoming null after\nthe newly added null pointer check."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "usb: gadget: u_serial: Add null pointer check in gserial_suspend",
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    "cveId": "CVE-2023-53356",
    "datePublished": "2025-09-17T14:56:46.113Z",
    "dateReserved": "2025-09-16T16:08:59.567Z",
    "dateUpdated": "2026-05-11T19:43:21.819Z",
    "state": "PUBLISHED"
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