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CVE-2023-52567

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows…

Published Mar 2, 2024CWE-476EPSS 0.23%

Overview

CVE-2023-52567 is a medium-severity vulnerability. It was published on March 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

serial: 8250_port: Check IRQ data before use

In case the leaf driver wants to use IRQ polling (irq = 0) and

IIR register shows that an interrupt happened in the 8250 hardware

the IRQ data can be NULL. In such a case we need to skip the wake

event as we came to this path from the timer interrupt and quite

likely system is already awake.

Without this fix we have got an Oops:

serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A

...

BUG: kernel NULL pointer dereference, address: 0000000000000010

RIP: 0010:serial8250_handle_irq+0x7c/0x240

Call Trace:

? serial8250_handle_irq+0x7c/0x240

? __pfx_serial8250_timeout+0x10/0x10

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/2b837f13a818f96304736453ac53b66a70aaa4f2Refgit.kernel.org/stable/c/3345cc5f02f1fb4c4dcb114706f2210d879ab933Refgit.kernel.org/stable/c/bf3c728e3692cc6d998874f0f27d433117348742Refgit.kernel.org/stable/c/c334650150c29234b0923476f51573ae1b2f252aRefgit.kernel.org/stable/c/cce7fc8b29961b64fadb1ce398dc5ff32a79643bRefgit.kernel.org/stable/c/e14afa4450cb7e4cf93e993a765801203d41d014Refgit.kernel.org/stable/c/e14f68a48fd445a083ac0750fafcb064df5f18f7Refgit.kernel.org/stable/c/ee5732caaffba3a37e753fdb89b4958db9a61847Refgit.kernel.org/stable/c/2b837f13a818f96304736453ac53b66a70aaa4f2Refgit.kernel.org/stable/c/3345cc5f02f1fb4c4dcb114706f2210d879ab933

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52567?

CVE-2023-52567 is a medium-severity vulnerability. It was published on March 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52567?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52567?

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-2023-52567?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52567 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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