CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of firmware logs in the accel/ivpu module, where insufficient validation allows logs smaller than their header size to be processed. This can lead to buffer overflows, potentially allowing attackers to read beyond allocated memory and cause denial-of-service conditions through infinite loops. Organizations using Linux systems with the affected kernel should prioritize this issue to mitigate risks associated with firmware log processing.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Reject firmware log with size smaller than header fw_log_from_bo() validates the tracing buffer header_size and that the log fits within the BO, but never checks that log->size is at least log->header_size. fw_log_print_buffer() then computes: u32 data_size = log->size - log->header_size; which underflows to a near-U32_MAX value when firmware reports a log whose size is smaller than its header. That huge data_size defeats the log_start/log_end bounds clamps added by commit dd1311bcf0e6 ("accel/ivpu: Add bounds checks for firmware log indices"), so fw_log_print_lines() reads far past the small real data region of the BO. A size of 0 also makes fw_log_from_bo() advance the offset by 0, causing the callers to loop forever on the same header. Reject logs whose size is smaller than the header (which also rejects size == 0).