What is CVE-2024-27437?

CVE-2024-27437 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2024-27437 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27437?

CVE-2024-27437 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-27437?

No patch is currently available for CVE-2024-27437. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2024-27437 actively exploited?

CVE-2024-27437 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-27437

Medium

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.

Package Linux Kernel

Published 2024-04-05

Last modified 2026-05-12

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

The following references provide additional information about CVE-2024-27437 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

Mailing List
Cert-Portal
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Kernel patch commit
https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060
Patch
Kernel patch commit
https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2024-27437

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-05

Modified 2026-05-12

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2024-27437?

CVE-2024-27437 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2024-27437 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27437?

CVE-2024-27437 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-27437?

No patch is currently available for CVE-2024-27437. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2024-27437 actively exploited?

No — CVE-2024-27437 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.