CVE-2026-93133

A flaw was found in the Linux kernel. In the riscv_acpi_add_prt_dep() function, the acpi_get_handle() call can fail, leading to the link_handle variable being uninitialized. This oversight could potentially lead to system instability or unexpected behavior.

This vulnerability is rated as having a Low impact because it is restricted to RISC-V architecture platforms utilizing ACPI firmware. Triggering the flaw requires specific or malformed ACPI table entries during hardware discovery, limiting any potential impact strictly to a local denial of service without compromising system confidentiality or integrity. Furthermore, mainstream architectures such as x86_64, aarch64, and s390x do not use this RISC-V specific code path, leaving typical Red Hat Enterprise Linux environments unaffected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.