CVE-2026-93133: ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
Published Sep 17, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
ACPI: RISC-V: Check acpigethandle() status in riscvacpiaddprtdep()
In riscvacpiaddprtdep(), the acpigethandle() call can fail which would leave linkhandle uninitialized.
Fix it by checking the acpigethandle() return status and skip the entry if it fails.
Affected Software
1 affected component
Linux Kernel
Event History
Sep 17, 2026
CVE Published
via MITRE·04:11 PM
Data Sourced
via MITRE·04:11 PM
Description
Frequently Asked Questions
1
What condition triggers the vulnerable path?
The issue occurs when acpi_get_handle() fails inside riscv_acpi_add_prt_dep(). Without checking that return status, the function can use an uninitialized link_handle.
2
What does the fix do when handle resolution fails?
The fix checks the acpi_get_handle() return status and skips the affected entry if the call fails.