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CVE-2023-53217

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nubus: Partially revert proc_create_single_data() conversion The conversion to proc_create_single_data() introduced a regressio…

Published Sep 15, 2025EPSS 0.17%

Overview

CVE-2023-53217 is a high-severity vulnerability. It was published on September 15, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

nubus: Partially revert proc_create_single_data() conversion

The conversion to proc_create_single_data() introduced a regression

whereby reading a file in /proc/bus/nubus results in a seg fault:

# grep -r . /proc/bus/nubus/e/

Data read fault at 0x00000020 in Super Data (pc=0x1074c2)

BAD KERNEL BUSERR

Oops: 00000000

Modules linked in:

PC: [<001074c2>] PDE_DATA+0xc/0x16

SR: 2010 SP: 38284958 a2: 01152370

d0: 00000001 d1: 01013000 d2: 01002790 d3: 00000000

d4: 00000001 d5: 0008ce2e a0: 00000000 a1: 00222a40

Process grep (pid: 45, task=142f8727)

Frame format=B ssw=074d isc=2008 isb=4e5e daddr=00000020 dobuf=01199e70

baddr=001074c8 dibuf=ffffffff ver=f

Stack from 01199e48:

01199e70 00222a58 01002790 00000000 011a3000 01199eb0 015000c0 00000000

00000000 01199ec0 01199ec0 000d551a 011a3000 00000001 00000000 00018000

d003f000 00000003 000

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0e96647cff9224db564a1cee6efccb13dbe11ee2Refgit.kernel.org/stable/c/67e3b5230cefed1eca470c460a2035f02986cebbRefgit.kernel.org/stable/c/9877533e1401dbbb2c7da8badda05d196aa07623Refgit.kernel.org/stable/c/a03f2f4bd49030f57849227be9ba38a3eb1edb61Refgit.kernel.org/stable/c/c06edf13f4cf7f9e8ff4bc6f7e951e4f074dc105Refgit.kernel.org/stable/c/f70407e8e0272e00d133c5e039168ff1bae6bcac

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53217?

CVE-2023-53217 is a high-severity vulnerability. It was published on September 15, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53217?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53217?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53217?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53217 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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