CVE-2025-21645: platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it

Q: What is the severity of CVE-2025-21645?

The CVE-2025-21645 vulnerability has a medium severity rating as it affects the interrupt handling in the Linux kernel.

Q: How do I fix CVE-2025-21645?

To fix CVE-2025-21645, you should update to the latest version of the Linux kernel where this vulnerability has been addressed.

Q: What type of systems are affected by CVE-2025-21645?

CVE-2025-21645 affects systems running vulnerable versions of the Linux kernel that utilize the i8042 keyboard controller.

Q: What is the impact of CVE-2025-21645 on system performance?

CVE-2025-21645 can potentially lead to improper wakeup handling for IRQ1, which may affect system responsiveness during sleep states.

Q: Is CVE-2025-21645 being actively exploited in the wild?

As of now, there is no public indication that CVE-2025-21645 is being actively exploited in the wild.

Published Jan 19, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved:

platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it

Wakeup for IRQ1 should be disabled only in cases where i8042 had actually enabled it, otherwise "wakedepth" for this IRQ will try to drop below zero and there will be an unpleasant WARN() logged:

kernel: atkbd serio0: Disabling IRQ1 wakeup source to avoid platform firmware bug kernel: ------------[ cut here ]------------ kernel: Unbalanced IRQ 1 wake disable kernel: WARNING: CPU: 10 PID: 6431 at kernel/irq/manage.c:920 irqsetirqwake+0x147/0x1a0

The PMC driver uses DEFINESIMPLEDEVPMOPS() to define its devpmops which sets amdpmcsuspendhandler() to the .suspend, .freeze, and .poweroff handlers. i8042pmsuspend(), however, is only set as the .suspend handler.

Fix the issue by call PMC suspend handler only from the same set of devpmops handlers as i8042pmsuspend(), which currently means just the .suspend handler.

To reproduce this issue try hibernating (S4) the machine after a fresh boot without putting it into s2idle first.

[ij: edited the commit message.]

Other sources

This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.

— Launchpad

Affected Software

176 affected componentsFixes available

Linux Linux kernel

Microsoft cbl2 kernel 5.15.186.1-1

Linux Linux kernel>=5.15.95<5.16

Linux Linux kernel>=6.1.11<6.1.140

Linux Linux kernel>=6.2.1<6.6.72

Linux Linux kernel>=6.7<6.12.10

Linux Linux kernel=6.2

Linux Linux kernel=6.2-rc6

Linux Linux kernel=6.2-rc7

Linux Linux kernel=6.2-rc8

Linux Linux kernel=6.13-rc1

Linux Linux kernel=6.13-rc2

Linux Linux kernel=6.13-rc3

Linux Linux kernel=6.13-rc4

Linux Linux kernel=6.13-rc5

Linux Linux kernel=6.13-rc6

debian/linux<6.1.140-1

6.1.140-1

debian/linux<6.12.10-1

6.12.10-1

debian/linux<6.12.10-1

6.12.10-1

ubuntu/linux-hwe-edge*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-azure*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-oem*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.15*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.15*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-azure-fde-5.15*

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.15*

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.15*

ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm-5.15*

ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15*

ubuntu/linux-lowlatency-hwe-5.15*

ubuntu/linux-nvidia-tegra-5.15*

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.15*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.15*

ubuntu/linux-riscv-5.8*

ubuntu/linux*

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws*

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1029.31~22.04.1

6.8.0-1029.31~22.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1029.34~22.04.1

6.8.0-1029.34~22.04.1

ubuntu/linux-azure-fde*

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1030.32~22.04.1

6.8.0-1030.32~22.04.1

ubuntu/linux-gke*

ubuntu/linux-gkeop*

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-60.63~22.04.1

6.8.0-60.63~22.04.1

ubuntu/linux-ibm*

ubuntu/linux-ibm-6.8<6.8.0-1026.26~22.04.1

6.8.0-1026.26~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg*

ubuntu/linux-kvm*

ubuntu/linux-lowlatency*

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-60.63.1~22.04.1

6.8.0-60.63.1~22.04.1

ubuntu/linux-nvidia*

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1028.31~22.04.1

6.8.0-1028.31~22.04.1

ubuntu/linux-nvidia-tegra*

ubuntu/linux-nvidia-tegra-igx*

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle*

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1026.27~22.04.1

6.8.0-1026.27~22.04.1

ubuntu/linux-raspi*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-62.65~22.04.1

6.8.0-62.65~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp*

ubuntu/linux-bluefield*

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-realtime*

ubuntu/linux-realtime-6.8<6.8.1-1022.23~22.04.1

6.8.1-1022.23~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<6.8.0-60.63

6.8.0-60.63

ubuntu/linux-aws<6.8.0-1029.31

6.8.0-1029.31

ubuntu/linux-azure<6.8.0-1029.34

6.8.0-1029.34

ubuntu/linux-azure-6.11<6.11.0-1012.12~24.04.1

6.11.0-1012.12~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1016.17

6.8.0-1016.17

ubuntu/linux-gcp<6.8.0-1030.32

6.8.0-1030.32

ubuntu/linux-gcp-6.11<6.11.0-1011.11~24.04.1

6.11.0-1011.11~24.04.1

ubuntu/linux-gke<6.8.0-1025.29

6.8.0-1025.29

ubuntu/linux-gkeop<6.8.0-1012.14

6.8.0-1012.14

ubuntu/linux-hwe-6.11<6.11.0-21.21~24.04.1

6.11.0-21.21~24.04.1

ubuntu/linux-ibm<6.8.0-1026.26

6.8.0-1026.26

ubuntu/linux-lowlatency<6.8.0-60.63.1

6.8.0-60.63.1

ubuntu/linux-nvidia<6.8.0-1028.31

6.8.0-1028.31

ubuntu/linux-nvidia-6.11<6.11.0-1007.7

6.11.0-1007.7

ubuntu/linux-nvidia-lowlatency<6.8.0-1028.31.1

6.8.0-1028.31.1

ubuntu/linux-nvidia-tegra<6.8.0-1008.8

6.8.0-1008.8

ubuntu/linux-oem-6.11<6.11.0-1017.17

6.11.0-1017.17

ubuntu/linux-oem-6.8<6.8.0-1028.28

6.8.0-1028.28

ubuntu/linux-oracle<6.8.0-1026.27

6.8.0-1026.27

ubuntu/linux-raspi<6.8.0-1028.32

6.8.0-1028.32

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv<6.8.0-60.63.1

6.8.0-60.63.1

ubuntu/linux-xilinx<6.8.0-1017.18

6.8.0-1017.18

ubuntu/linux-raspi-realtime<6.8.0-2023.24

6.8.0-2023.24

ubuntu/linux-realtime<6.8.1-1022.23

6.8.1-1022.23

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

ubuntu/linux-vmware*

linux/kernel<6.1.140

6.1.140

linux/kernel>=6.2.0<6.6.72

6.6.72

debian/linux

6.1.176-16.1.190-16.12.107-16.12.116-17.2.15-17.3.4-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.140-1
Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.12.10-1
Upgrade
Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1029.31~22.04.1
Upgrade
Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1029.34~22.04.1
Upgrade
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Fixed in 6.8.0-1030.32~22.04.1
Upgrade
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Fixed in 6.8.0-60.63~22.04.1
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Fixed in 6.8.0-1026.26~22.04.1
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Upgrade ubuntu/linux-lowlatency-hwe-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-60.63.1~22.04.1
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Fixed in 6.8.0-1028.31~22.04.1
Upgrade
Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1026.27~22.04.1
Upgrade
Upgrade ubuntu/linux-riscv-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-62.65~22.04.1
Upgrade
Upgrade ubuntu/linux-realtime-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.1-1022.23~22.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 6.8.0-60.63
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 6.8.0-1029.31
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 6.8.0-1029.34
Upgrade
Upgrade ubuntu/linux-azure-6.11 to a version that resolves this vulnerability.
Fixed in 6.11.0-1012.12~24.04.1
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Fixed in 6.8.0-1016.17
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Fixed in 6.8.0-1030.32
Upgrade
Upgrade ubuntu/linux-gcp-6.11 to a version that resolves this vulnerability.
Fixed in 6.11.0-1011.11~24.04.1
Upgrade
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Fixed in 6.8.0-1025.29
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Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 6.8.0-1012.14
Upgrade
Upgrade ubuntu/linux-hwe-6.11 to a version that resolves this vulnerability.
Fixed in 6.11.0-21.21~24.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 6.8.0-1026.26
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 6.8.0-60.63.1
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 6.8.0-1028.31
Upgrade
Upgrade ubuntu/linux-nvidia-6.11 to a version that resolves this vulnerability.
Fixed in 6.11.0-1007.7
Upgrade
Upgrade ubuntu/linux-nvidia-lowlatency to a version that resolves this vulnerability.
Fixed in 6.8.0-1028.31.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.
Fixed in 6.8.0-1008.8
Upgrade
Upgrade ubuntu/linux-oem-6.11 to a version that resolves this vulnerability.
Fixed in 6.11.0-1017.17
Upgrade
Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1028.28
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 6.8.0-1026.27
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 6.8.0-1028.32
Upgrade
Upgrade ubuntu/linux-riscv to a version that resolves this vulnerability.
Fixed in 6.8.0-60.63.1
Upgrade
Upgrade ubuntu/linux-xilinx to a version that resolves this vulnerability.
Fixed in 6.8.0-1017.18
Upgrade
Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.
Fixed in 6.8.0-2023.24
Upgrade
Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 6.8.1-1022.23
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-78.78+fips1
Upgrade
Upgrade linux/Kernel to a version that resolves this vulnerability.
Fixed in 6.1.140
Upgrade
Upgrade linux/Kernel to a version that resolves this vulnerability.
Fixed in 6.6.72
Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.4-1

Event History

Jan 19, 2025

CVE Published

via MITRE·10:18 AM

Data Sourced

via MITRE·10:18 AM

Description

Data Sourced

via OSV·10:18 AM

DescriptionAffected Software

Data Sourced

via NVD·11:15 AM

RemedyDescriptionSeverityAffected Software

Oct 18, 2025

Data Sourced

via Microsoft·01:01 AM

DescriptionSeverityWeaknessAffected Software

Nov 11, 2026

Data Sourced

via OSV·09:38 AM

Severity

Parent advisories

This vulnerability appears in the following advisories.

DSA-5925

Peer vulnerabilities

Found alongside the following vulnerabilities.

DLA-4271-1

Frequently Asked Questions

What is the severity of CVE-2025-21645?

The CVE-2025-21645 vulnerability has a medium severity rating as it affects the interrupt handling in the Linux kernel.

How do I fix CVE-2025-21645?

To fix CVE-2025-21645, you should update to the latest version of the Linux kernel where this vulnerability has been addressed.

What type of systems are affected by CVE-2025-21645?

CVE-2025-21645 affects systems running vulnerable versions of the Linux kernel that utilize the i8042 keyboard controller.

What is the impact of CVE-2025-21645 on system performance?

CVE-2025-21645 can potentially lead to improper wakeup handling for IRQ1, which may affect system responsiveness during sleep states.

Is CVE-2025-21645 being actively exploited in the wild?

As of now, there is no public indication that CVE-2025-21645 is being actively exploited in the wild.

CVE-2025-21645: platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it

Other sources

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2025-21645?

How do I fix CVE-2025-21645?

What type of systems are affected by CVE-2025-21645?

What is the impact of CVE-2025-21645 on system performance?

Is CVE-2025-21645 being actively exploited in the wild?

Company

Resources

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