CVE-2023-53551

MEDIUM EPSS 3.9%
Published Oct 4, 20258mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 4, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.8  –  <5.10.171
linuxlinux_kernel*≥5.11  –  <5.15.97
linuxlinux_kernel*≥5.16  –  <6.1.15
linuxlinux_kernel*≥6.2  –  <6.2.2

References 5

  • git.kernel.org https://git.kernel.org/stable/c/3b24c980dc07be4550a9d1450ed7057f882530e5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3b24c980dc07be4550a9d1450ed7057f882530e5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6
    Patch