Description
In the Linux kernel, the following vulnerability has been resolved: HID: intel-ish-hid: ipc: Disable and reenable ACPI GPE bit The EHL (Elkhart Lake) based platforms provide a OOB (Out of band) service, which allows to wakup device when the system is in S5 (Soft-Off state). This OOB service can be enabled/disabled from BIOS settings. When enabled, the ISH device gets PME wake capability. To enable PME wakeup, driver also needs to enable ACPI GPE bit. On resume, BIOS will clear the wakeup bit. So driver need to re-enable it in resume function to keep the next wakeup capability. But this BIOS clearing of wakeup bit doesn't decrement internal OS GPE reference count, so this reenabling on every resume will cause reference count to overflow. So first disable and reenable ACPI GPE bit using acpi_disable_gpe().
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
2e23a70edabe933284f690dff49497fb6b82b0e5 to < 8781fe259dd5a178fdd1069401bbd1437f9491c5affected2e23a70edabe933284f690dff49497fb6b82b0e5 to < cdcc04e844a2d22d9d25cef1e8e504a174ea9f8faffected2e23a70edabe933284f690dff49497fb6b82b0e5 to < 60fb3f054c99608ddb1f2466c07108da6292951eaffected2e23a70edabe933284f690dff49497fb6b82b0e5 to < 8f02139ad9a7e6e5c05712f8c1501eebed8eacfdaffected
Linux Linux
Default version status: affected
5.12affected0 to < 5.12unaffected5.15.135 to ≤ 5.15.*unaffected6.1.57 to ≤ 6.1.*unaffected6.5.7 to ≤ 6.5.*unaffected6.6 to ≤ *unaffected