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5.5
MEDIUM CVSS 3.1
CVE-2025-21645
platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it
Description

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 "wake_depth" 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 irq_set_irq_wake+0x147/0x1a0 The PMC driver uses DEFINE_SIMPLE_DEV_PM_OPS() to define its dev_pm_ops which sets amd_pmc_suspend_handler() to the .suspend, .freeze, and .poweroff handlers. i8042_pm_suspend(), however, is only set as the .suspend handler. Fix the issue by call PMC suspend handler only from the same set of dev_pm_ops handlers as i8042_pm_suspend(), 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.]

INFO

Published Date :

Jan. 19, 2025, 11:15 a.m.

Last Modified :

Nov. 3, 2025, 8:17 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-21645 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Update the Linux kernel to a version that includes the fix for the IRQ1 wakeup issue.
  • Update the Linux kernel to the patched version.
  • Apply the AMD PMC driver fix.
  • Ensure i8042 enables IRQ1 wakeup correctly.
  • Test system suspend and resume functionality.
Public PoC/Exploit Available at Github

CVE-2025-21645 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-21645.

URL Resource
https://git.kernel.org/stable/c/5cc621085e2b7a9b1905a98f8e5a86bb4aea2016 Patch
https://git.kernel.org/stable/c/ab47d72b736e78d3c2370b26e0bfc46eb0918391 Patch
https://git.kernel.org/stable/c/b25778c87a6bce40c31e92364f08aa6240309e25 Patch
https://git.kernel.org/stable/c/dd410d784402c5775f66faf8b624e85e41c38aaf Patch
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-21645 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-21645 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
oogasawa/Utility-security

None

Java Shell

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : May 13, 2025, 2:51 a.m. This repo has been linked 137 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-21645 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-21645 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 03, 2025

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
  • Initial Analysis by [email protected]

    Oct. 16, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.95 up to (excluding) 5.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.11 up to (excluding) 6.1.140 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2.1 up to (excluding) 6.6.72 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.10 *cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/5cc621085e2b7a9b1905a98f8e5a86bb4aea2016 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/ab47d72b736e78d3c2370b26e0bfc46eb0918391 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/b25778c87a6bce40c31e92364f08aa6240309e25 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/dd410d784402c5775f66faf8b624e85e41c38aaf Types: Patch
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 22, 2025

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/ab47d72b736e78d3c2370b26e0bfc46eb0918391
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 19, 2025

    Action Type Old Value New Value
    Added Description 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 "wake_depth" 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 irq_set_irq_wake+0x147/0x1a0 The PMC driver uses DEFINE_SIMPLE_DEV_PM_OPS() to define its dev_pm_ops which sets amd_pmc_suspend_handler() to the .suspend, .freeze, and .poweroff handlers. i8042_pm_suspend(), however, is only set as the .suspend handler. Fix the issue by call PMC suspend handler only from the same set of dev_pm_ops handlers as i8042_pm_suspend(), 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.]
    Added Reference https://git.kernel.org/stable/c/5cc621085e2b7a9b1905a98f8e5a86bb4aea2016
    Added Reference https://git.kernel.org/stable/c/b25778c87a6bce40c31e92364f08aa6240309e25
    Added Reference https://git.kernel.org/stable/c/dd410d784402c5775f66faf8b624e85e41c38aaf
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact