Adding debian version 4.19.249-2.debian/4.19.249-2debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/debian/patches/features/all/lockdown/0021-Lock-down-TIOCSSERIAL.patch b/debian/patches/features/all/lockdown/0021-Lock-down-TIOCSSERIAL.patch
new file mode 100644
index 000000000..d906326a9
--- /dev/null
+++ b/debian/patches/features/all/lockdown/0021-Lock-down-TIOCSSERIAL.patch
@@ -0,0 +1,34 @@
+From: David Howells <dhowells@redhat.com>
+Date: Wed, 8 Nov 2017 15:11:35 +0000
+Subject: [21/29] Lock down TIOCSSERIAL
+Origin: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=f5fdeda0622ca040961521819794193777a03e8a
+
+Lock down TIOCSSERIAL as that can be used to change the ioport and irq
+settings on a serial port.  This only appears to be an issue for the serial
+drivers that use the core serial code.  All other drivers seem to either
+ignore attempts to change port/irq or give an error.
+
+Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: David Howells <dhowells@redhat.com>
+cc: Jiri Slaby <jslaby@suse.com>
+---
+ drivers/tty/serial/serial_core.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+Index: linux/drivers/tty/serial/serial_core.c
+===================================================================
+--- linux.orig/drivers/tty/serial/serial_core.c
++++ linux/drivers/tty/serial/serial_core.c
+@@ -850,6 +850,12 @@ static int uart_set_info(struct tty_stru
+ 	new_flags = (__force upf_t)new_info->flags;
+ 	old_custom_divisor = uport->custom_divisor;
+ 
++	if ((change_port || change_irq) &&
++	    kernel_is_locked_down("Using TIOCSSERIAL to change device addresses, irqs and dma channels")) {
++		retval = -EPERM;
++		goto exit;
++	}
++
+ 	if (!capable(CAP_SYS_ADMIN)) {
+ 		retval = -EPERM;
+ 		if (change_irq || change_port ||