6ee50c8e26
The .x25_addr[] address comes from the user and is not necessarily
NUL terminated. This leads to a couple problems. The first problem is
that the strlen() in x25_bind() can read beyond the end of the buffer.
The second problem is more subtle and could result in memory corruption.
The call tree is:
x25_connect()
--> x25_write_internal()
--> x25_addr_aton()
The .x25_addr[] buffers are copied to the "addresses" buffer from
x25_write_internal() so it will lead to stack corruption.
Verify that the strings are NUL terminated and return -EINVAL if they
are not.
Fixes:
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| af_x25.c | ||
| sysctl_net_x25.c | ||
| x25_dev.c | ||
| x25_facilities.c | ||
| x25_forward.c | ||
| x25_in.c | ||
| x25_link.c | ||
| x25_out.c | ||
| x25_proc.c | ||
| x25_route.c | ||
| x25_subr.c | ||
| x25_timer.c | ||