CVE-2025-40136: Linux kernel · crypto: hisilicon/qm – request reserved interrupt for virtual function
Source GCVE Database
Not known to be exploited · fixed in e0a82361cef20380b1c0f342c7e92f8ddabeefc2 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 16:33 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in e0a82361cef20380b1c0f342c7e92f8ddabeefc2, 24315474ca913c0693939ab74b389ee04c7d3020, 9228facb308157ac0bdd264b873187896f7a9c7a +2
Exploitation evidence
Disclosed: evidence found.
CVE published 12 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
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.
References
- nvd.nist.gov/vuln/detail/CVE-2025-40136 (opens in a new tab)
- git.kernel.org/stable/c/24315474ca913c0693939ab74b389ee04c7d3020 (opens in a new tab)
- git.kernel.org/stable/c/5f75857ed634d04266301d7a4f695a7deeb9bfdc (opens in a new tab)
- git.kernel.org/stable/c/854da2b0df1654d63963d587b12fec6068d89643 (opens in a new tab)
- git.kernel.org/stable/c/9228facb308157ac0bdd264b873187896f7a9c7a (opens in a new tab)
- git.kernel.org/stable/c/e0a82361cef20380b1c0f342c7e92f8ddabeefc2 (opens in a new tab)