CVE-2026-93133 ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
A missing status check in the Linux kernel's RISC-V ACPI code can lead to a null pointer dereference, causing a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93133?
CVE-2026-93133 is a vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
In riscv_acpi_add_prt_dep(), the acpi_get_handle() call can fail which would leave link_handle uninitialized.
Fix it by checking the acpi_get_handle() return status and skip the entry if it fails.
Which versions are affected by CVE-2026-93133?
How do I fix CVE-2026-93133?
Apply the vendor's patch.
Is CVE-2026-93133 being exploited?
There is no known exploitation of CVE-2026-93133 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93133, DEBIAN-CVE-2026-93133, GHSA-6x8h-vjg9-qvc5, UBUNTU-CVE-2026-93133.