title: copy_file_range insufficient capability rights check
description: 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.
problem types: CWE-273 Improper Check for Dropped Privileges
affected:
{
defaultStatus: unknown
modules: capsicum
product: FreeBSD
vendor: FreeBSD
versions:
lessThan: p4, status: affected, version: 13.2-RELEASE, versionType: release
}