In the Linux kernel, the following vulnerability has been resolved:
kheaders: Use array declaration instead of char
Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination and source buffers. Defining kernel_headers_data as char would trip this check. Since these addresses are treated as byte arrays, define them as arrays (as done everywhere else).
This was seen with:
$ cat /sys/kernel/kheaders.tar.xz » /dev/null
detected buffer overflow in memcpy kernel BUG at lib/string_helpers.c:1027! … RIP: 0010:fortify_panic+0xf/0x20 […] Call Trace: ikheaders_read+0x45/0x50 [kheaders] kernfs_fop_read_iter+0x1a4/0x2f0 …