PT-2026-2505 · Linux+2 · Linux Kernel+2
Published
2025-11-20
·
Updated
2026-05-11
·
CVE-2025-68773
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the fsl-cpm driver within the Linux kernel related to handling transfer sizes during SPI communication. A commit intended to optimize large transfers by switching to 16-bit mode lacked proper validation to ensure the transfer size was even. This oversight went unnoticed initially due to the use of pre-allocated bounce buffers. However, a subsequent change introduced dynamically allocated bounce buffers, exposing a buffer overrun condition when handling odd-sized transfers. The issue arises when the driver switches to 16-bit mode without verifying that the transfer length is even, potentially leading to out-of-bounds writes.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu