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CVE-2025-40136

crypto: hisilicon/qm - request reserved interrupt for virtual function

N/A
Published: November 12, 2025 at 10:23 AM UTC
Updated: October 21, 2026 at 01:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
3536cc55cadaf2a03241915f9cfdaf6cd073e4fe6.1
Vendor states this is fixed in 854da2b0df1654d63963d587b12fec6068d89643 (fixed)
Vendor states this is fixed in 9228facb308157ac0bdd264b873187896f7a9c7a (fixed)
Vendor states this is fixed in 6.1 (unaffected)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.17.3 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: cverecord
https://git.kernel.org/stable/c/854da2b0df1654d63963d587b12fec6068d89643
Source: cverecord
https://git.kernel.org/stable/c/9228facb308157ac0bdd264b873187896f7a9c7a
Source: cverecord
https://git.kernel.org/stable/c/5f75857ed634d04266301d7a4f695a7deeb9bfdc
Source: cverecord
https://git.kernel.org/stable/c/24315474ca913c0693939ab74b389ee04c7d3020

Quick Info

StatusDEFERRED

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