CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of password encoding in the hp-bioscfg component, where a malformed ACPI package can lead to out-of-bounds memory access. This flaw could potentially allow an attacker to exploit the system by causing the parser to read beyond allocated memory, leading to undefined behavior or crashes. Organizations using Linux systems, particularly those relying on ACPI for BIOS configuration, should prioritize patching this vulnerability to mitigate potential security risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: hp-bioscfg: fix password encoding bounds check The password PSWD_ENCODINGS parser reads password_obj[elem + pos_values] while copying the supported password encodings from the ACPI package. The outer loop only guarantees that elem is within password_obj_count. The encoding count is bounded by MAX_ENCODINGS_SIZE, but that does not guarantee that the ACPI package contains enough entries for all elem + pos_values accesses. A malformed package can therefore declare a non-zero encoding count without providing enough string objects, causing the parser to read past the ACPI package array and pass an out-of-bounds string pointer and length to hp_convert_hexstr_to_str(). Add the same computed-index bounds check used by the other offset-based package parsing loops before reading password_obj[elem + pos_values].