CVE-2025-21645

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-01-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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.]

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

January 19, 2025

Last Modified

July 14, 2026

Advisory Details (6)

Auto-updated Jul 17, 2026
Patch available.
generic

SSA-019113

https://cert-portal.siemens.com/productcert/html/ssa-019113.html
generic Patch Available

[SECURITY] [DLA 4271-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
generic

platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dd410d784402c5775f66faf8b624e85e41c38aaf
generic

platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b25778c87a6bce40c31e92364f08aa6240309e25
generic

platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ab47d72b736e78d3c2370b26e0bfc46eb0918391
generic

platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5cc621085e2b7a9b1905a98f8e5a86bb4aea2016

Vendor Advisories for CVE-2025-21645(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-21.21) @ oracular2026-05-30ubuntu
ubuntulinux-tools-lowlatency-hwe-24.04-edge (6.11.0-1011.12~24.04.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1017.17) @ noble2026-05-30ubuntu
ubuntulinux-tools-lowlatency-64k (6.11.0-1011.12) @ oracular2026-05-30ubuntu
ubuntulinux-tools-raspi (6.11.0-1010.10) @ oracular2026-05-30ubuntu
ubuntulinux-virtual (6.8.0-60.63) @ noble2026-05-30ubuntu
ubuntulinux-tools-realtime (6.8.1-1022.23) @ noble2026-05-30ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1028.31~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-gke (6.8.0-1025.29) @ noble2026-05-30ubuntu
ubuntulinux-tools-oem-24.04a (6.8.0-1028.28) @ noble2026-05-30ubuntu
ubuntulinux-tools-azure-nvidia (6.8.0-1016.17) @ noble2026-05-30ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1012.14) @ noble2026-05-30ubuntu
ubuntulinux-tools-raspi-realtime (6.8.0-2023.24) @ noble2026-05-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-60.63~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-raspi (6.8.0-1028.32) @ noble2026-05-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1026.27~22.04.1) @ jammy2026-05-30ubuntu
linuxKernel @ 6.1.140—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(17)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 112 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-04 15:09 UTCEPSS rescore
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  11. 2026-07-28 15:35 UTCEPSS rescore
  12. 2026-07-27 14:12 UTCEPSS rescore
  13. 2026-07-26 14:53 UTCEPSS rescore
  14. 2026-07-25 14:17 UTCEPSS rescore
  15. 2026-07-24 17:41 UTCOSV refresh
  16. 2026-07-24 14:17 UTCEPSS rescore
  17. 2026-07-23 14:17 UTCEPSS rescore
  18. 2026-07-23 02:50 UTCEG score recompute
  19. 2026-07-22 14:07 UTCEPSS rescore
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  21. 2026-07-21 15:24 UTCEPSS rescore
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  1. 2026-07-19 02:28 UTCEPSS rescore
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  5. 2026-07-15 16:57 UTCEPSS rescore
  6. 2026-07-15 01:59 UTCEPSS rescore
  7. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  8. 2026-07-14 13:11 UTCMITRE cvelistV5
  9. 2026-07-13 22:29 UTCEPSS rescore
  10. 2026-07-13 22:29 UTCEPSS rescore
  11. 2026-07-13 06:12 UTCEPSS rescore
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  17. 2026-07-09 19:09 UTCEPSS rescore
  18. 2026-07-08 15:14 UTCEPSS rescore
  19. 2026-07-07 13:45 UTCEPSS rescore
  20. 2026-07-07 12:51 UTCOSV refresh
  21. 2026-07-06 16:26 UTCEPSS rescore
  22. 2026-07-06 02:22 UTCEPSS rescore
  23. 2026-07-06 02:22 UTCEPSS rescore
  24. 2026-07-05 02:30 UTCEPSS rescore
  25. 2026-07-04 06:30 UTCEPSS rescore
  26. 2026-07-01 15:06 UTCEPSS rescore
  27. 2026-06-30 23:21 UTCEPSS rescore
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  29. 2026-06-29 14:06 UTCEPSS rescore
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  40. 2026-06-23 21:32 UTCEPSS rescore
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  42. 2026-06-22 14:25 UTCEPSS rescore
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  48. 2026-06-19 19:25 UTCEPSS rescore
  49. 2026-06-19 19:25 UTCEPSS rescore
  50. 2026-06-19 00:05 UTCOSV refresh
  51. 2026-06-18 17:52 UTCEPSS rescore
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  53. 2026-06-17 17:52 UTCEPSS rescore
  54. 2026-06-16 17:52 UTCEPSS rescore
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  67. 2026-06-06 13:47 UTCEPSS rescore
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  75. 2026-06-02 20:12 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-21645?
CVE-2025-21645 is a medium vulnerability published on January 19, 2025. 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…
When was CVE-2025-21645 disclosed?
CVE-2025-21645 was first published in the National Vulnerability Database on January 19, 2025, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-21645 actively exploited?
CVE-2025-21645 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 84.8% of all scored CVEs.
What is the CVSS score of CVE-2025-21645?
CVE-2025-21645 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-21645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-21645, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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