What is CVE-2025-40136?

CVE-2025-40136 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.1 onward and patched in 6.17.3 and 6.18. CVE-2025-40136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-40136?

CVE-2025-40136 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-40136?

Yes, CVE-2025-40136 has been patched. Fixed versions include 6.17.3 and 6.18. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-40136 actively exploited?

CVE-2025-40136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-40136

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/qm - request reserved interrupt for virtual function The device interrupt vector 3 is an error interrupt for physical function and a reserved interrupt for virtual function. However, the driver has not registered the reserved interrupt for virtual function. When allocating interrupts, the number of interrupts is allocated based on powers of two, which includes this interrupt. When the system enables GICv4 and the virtual function passthrough to the virtual machine, releasing the interrupt in the driver triggers a warning. The WARNING report is: WARNING: CPU: 62 PID: 14889 at arch/arm64/kvm/vgic/vgic-its.c:852 its_free_ite+0x94/0xb4 Therefore, register a reserved interrupt for VF and set the IRQF_NO_AUTOEN flag to avoid that warning.

Package Linux Kernel

Published 2025-11-12

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 6.1 and later are affected. Fixed in 6.17.3, 6.18 and their respective stable series.

Affected from

≥ 6.1

Fixed in

✓ 6.17.3 6.17.x ✓ 6.18

References

The following references provide additional information about CVE-2025-40136 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/854da2b0df1654d63963d587b12fec6068d89643
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9228facb308157ac0bdd264b873187896f7a9c7a
Patch

Frequently asked questions

What is CVE-2025-40136?

CVE-2025-40136 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.1 onward and has been patched in 6.17.3 and 6.18. CVE-2025-40136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-40136?

Yes — CVE-2025-40136 has been patched. Fixed versions include 6.17.3 and 6.18. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-40136 actively exploited?

No — CVE-2025-40136 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.