VulnerabilityPublished 12 Nov 2025Updated 21 Oct 2026

CVE-2025-40136: Linux kernel · crypto: hisilicon/qm – request reserved interrupt for virtual function

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 24315474ca913c0693939ab74b389ee04c7d3020 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 24315474ca913c0693939ab74b389ee04c7d3020, 9228facb308157ac0bdd264b873187896f7a9c7a, 854da2b0df1654d63963d587b12fec6068d89643 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 24315474ca913c0693939ab74b389ee04c7d3020, 9228facb308157ac0bdd264b873187896f7a9c7a, 854da2b0df1654d63963d587b12fec6068d89643 or 5f75857ed634d04266301d7a4f695a7deeb9bfdc.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 3536cc55cadaf2a03241915f9cfdaf6cd073e4fe, < 24315474ca913c0693939ab74b389ee04c7d3020	Fixed in 24315474ca913c0693939ab74b389ee04c7d3020
LinuxLinux	Affected ≥ 3536cc55cadaf2a03241915f9cfdaf6cd073e4fe, < 9228facb308157ac0bdd264b873187896f7a9c7a	Fixed in 9228facb308157ac0bdd264b873187896f7a9c7a
LinuxLinux	Affected ≥ 3536cc55cadaf2a03241915f9cfdaf6cd073e4fe, < 854da2b0df1654d63963d587b12fec6068d89643	Fixed in 854da2b0df1654d63963d587b12fec6068d89643
LinuxLinux	Affected ≥ 3536cc55cadaf2a03241915f9cfdaf6cd073e4fe, < 5f75857ed634d04266301d7a4f695a7deeb9bfdc	Fixed in 5f75857ed634d04266301d7a4f695a7deeb9bfdc
LinuxLinux	Affected =6.1	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

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