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CVE-2021-46909

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ARM: footbridge: fix PCI interrupt mapping Since commit 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe(…

Published Feb 27, 2024CWE-754EPSS 0.24%

Overview

CVE-2021-46909 is a medium-severity vulnerability. It was published on February 27, 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:

ARM: footbridge: fix PCI interrupt mapping

Since commit 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in

pci_device_probe()"), the PCI code will call the IRQ mapping function

whenever a PCI driver is probed. If these are marked as __init, this

causes an oops if a PCI driver is loaded or bound after the kernel has

initialised.

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/1fc087fdb98d556b416c82ed6e3964a30885f47aRefgit.kernel.org/stable/c/2643da6aa57920d9159a1a579fb04f89a2b0d29aRefgit.kernel.org/stable/c/30e3b4f256b4e366a61658c294f6a21b8626dda7Refgit.kernel.org/stable/c/532747fd5c7aaa17ee5cf79f3e947c31eb0e35cfRefgit.kernel.org/stable/c/871b569a3e67f570df9f5ba195444dc7c621293bRefgit.kernel.org/stable/c/c3efce8cc9807339633ee30e39882f4c8626ee1dRefgit.kernel.org/stable/c/1fc087fdb98d556b416c82ed6e3964a30885f47aRefgit.kernel.org/stable/c/2643da6aa57920d9159a1a579fb04f89a2b0d29aRefgit.kernel.org/stable/c/30e3b4f256b4e366a61658c294f6a21b8626dda7Refgit.kernel.org/stable/c/532747fd5c7aaa17ee5cf79f3e947c31eb0e35cf

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46909?

CVE-2021-46909 is a medium-severity vulnerability. It was published on February 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-46909?

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-2021-46909?

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-2021-46909?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46909 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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