CVE-2026-46332
HighCVSS 8.0Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel, the greybus driver for gb-beagleplay has a vulnerability due to unbounded buffering of bootloader receive data. The cc1352_bootloader_rx() function appends each serdev chunk to the fixed rx_buffer without checking remaining space, potentially causing a buffer overflow.
Risk Assessment
A buffer overflow in rx_buffer could allow an attacker to corrupt kernel memory, potentially leading to system crash or privilege escalation when malicious data is sent over the serial interface.
Recommendation
Immediately update the Linux kernel to a version containing the fix that checks available buffer space before copying data and discards excess bytes to prevent overflow.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: bound bootloader receive buffering cc1352_bootloader_rx() appends each serdev chunk into the fixed rx_buffer before parsing bootloader packets. The helper can keep leftover bytes between callbacks and may receive multiple packets in one callback, so a single count value is not constrained by one packet length. Check that the incoming chunk fits in the remaining receive buffer space before memcpy(). If it does not, drop the staged data and consume the bytes instead of overflowing rx_buffer.