CVE-2023-5369: Freebsd

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Before correction, the copy_file_range system call checked only for the CAP_READ and CAP_WRITE capabilities on the input and output file descriptors, respectively. Using an offset is logically equivalent to seeking, and the system call must additionally require the CAP_SEEK capability. This incorrect privilege check enabled sandboxed processes with only read or write but no seek capability on a file descriptor to read data from or write data to an arbitrary location within the file corresponding to that file descriptor.

Affected products

Published 2023-10-04. Last modified 2026-06-17.