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CVE Vulnerability Details :
CVE-2026-43122
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-06 May, 2026 | 11:27
Updated At-11 May, 2026 | 22:18
Rejected At-
▼CVE Numbering Authority (CNA)
ACPI: processor: Update cpuidle driver check in __acpi_processor_start()

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Update cpuidle driver check in __acpi_processor_start() Commit 7a8c994cbb2d ("ACPI: processor: idle: Optimize ACPI idle driver registration") moved the ACPI idle driver registration to acpi_processor_driver_init() and acpi_processor_power_init() does not register an idle driver any more. Accordingly, the cpuidle driver check in __acpi_processor_start() needs to be updated to avoid calling acpi_processor_power_init() without a cpuidle driver, in which case the registration of the cpuidle device in that function would lead to a NULL pointer dereference in __cpuidle_register_device().

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/acpi/processor_driver.c
Default Status
unaffected
Versions
Affected
  • From 7a8c994cbb2db3c5335cee35fd486557f5aaf7e1 before 68f38f648e4b5bed2aeadd2f711e25302e6490f8 (git)
  • From 7a8c994cbb2db3c5335cee35fd486557f5aaf7e1 before 6cfed39c2ce64ac024bbde458a9727105e0b8c66 (git)
  • From 7a8c994cbb2db3c5335cee35fd486557f5aaf7e1 before 0089ce1c056aee547115bdc25c223f8f88c08498 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/acpi/processor_driver.c
Default Status
affected
Versions
Affected
  • 6.18
Unaffected
  • From 0 before 6.18 (semver)
  • From 6.18.14 through 6.18.* (semver)
  • From 6.19.4 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/68f38f648e4b5bed2aeadd2f711e25302e6490f8
N/A
https://git.kernel.org/stable/c/6cfed39c2ce64ac024bbde458a9727105e0b8c66
N/A
https://git.kernel.org/stable/c/0089ce1c056aee547115bdc25c223f8f88c08498
N/A
Hyperlink: https://git.kernel.org/stable/c/68f38f648e4b5bed2aeadd2f711e25302e6490f8
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/6cfed39c2ce64ac024bbde458a9727105e0b8c66
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/0089ce1c056aee547115bdc25c223f8f88c08498
Resource: N/A
Details not found