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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-21645

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 72e5a83b7c8401856cc3732150af24e43726717a to < ab47d72b736e78d3c2370b26e0bfc46eb0918391affected
  • 8e60615e8932167057b363c11a7835da7f007106 to < 5cc621085e2b7a9b1905a98f8e5a86bb4aea2016affected
  • 8e60615e8932167057b363c11a7835da7f007106 to < b25778c87a6bce40c31e92364f08aa6240309e25affected
  • 8e60615e8932167057b363c11a7835da7f007106 to < dd410d784402c5775f66faf8b624e85e41c38aafaffected
  • 3fc9dc0340e0b5df8059313537b55f82c1e84e94affected
  • 6.1.11 to < 6.1.140affected
  • 5.15.95 to < 5.16affected

Linux Linux

Default version status: affected

  • 6.2affected
  • 0 to < 6.2unaffected
  • 6.1.140 to ≤ 6.1.*unaffected
  • 6.6.72 to ≤ 6.6.*unaffected
  • 6.12.10 to ≤ 6.12.*unaffected
  • 6.13 to ≤ *unaffected

References