This activates CONFIG_SLAB_FREELIST_RANDOM.
This option make the free list less predictable. This makes it harder to
exploit heap based security vulnerabilities.
This adds a little bit more code to the kernel and a small additional
compute overhead.
This option is activated in Debian by default.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The target is currently broken with Kernel 5.15 and no one in sight to
fix it. Instead of stalling the next release indefinitely, make it
source only and see if someone steps up to fix it.
Signed-off-by: Paul Spooren <paul.spooren@rhebo.com>
The target is currently broken with Kernel 5.15 and no one in sight to
fix it. Instead of stalling the next release indefinitely, make it
source only and see if someone steps up to fix it.
Signed-off-by: Paul Spooren <paul.spooren@rhebo.com>
The image_header_t typedef has been removed from
uboot v2023.01 [1], replaced with legacy struct.
[1] f3543e6944
Fixes: 3d5c542 ("uboot-mediatek: update to U-Boot 2023.01")
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
CONFIG_SYS_TEXT_BASE has been renamed to CONFIG_TEXT_BASE
in uboot v2023.01 [1], fixes all this variable.
[1] 984639039f
Fixes: 3d5c5427 ("uboot-mediatek: update to U-Boot 2023.01")
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Rename existing device to v1 and create common .dtsi
Difference to v1: 16MB Flash
Specifications:
SoC: MediaTek MT7621
RAM: 256 MB
Flash: 16 MB (SPI NOR, XM25QH128C on my device)
WiFi: MediaTek MT7915E
Switch: 1 WAN, 4 LAN (Gigabit)
Buttons: Reset, WPS
LEDs: Two Power LEDs (blue and red; together they form purple)
Power: DC 12V 1A center positive
Serial: 115200 8N1
C440 - (3V3 - GND - RX - TX) - C41 | v1 and v2
(P - G - R - T) | v2 labels them on the board
Installation:
Download and flash the manufacturer's built OpenWrt image available at
http://www.cudytech.com/openwrt_software_download
Install the new OpenWrt image via luci (System -> Backup/Flash firmware)
Be sure to NOT keep settings.
Recovery:
Loads only signed manufacture firmware due to bootloader RSA verification
Serve tftp-recovery image as /recovery.bin on 192.168.1.88/24
Connect to any lan ethernet port
Power on the device while holding the reset button
Wait at least 8 seconds before releasing reset button for image to
download
MAC addresses as verified by OEM firmware:
use address source
LAN f4:a4:54:86:75:a2 label
WAN f4:a4:54:86:75:a3 label + 1
2g f4:a4:54:86:75:a2 label
5g f6:a4:54:b6:75:a2 label + LA-Bit set + 4th oktet increased
The label MAC address is found in bdinfo 0xde00.
Signed-off-by: Felix Baumann <felix.bau@gmx.de>
The switch driver actually expects every port to have a PHY handle, and
several branches in the code determine if a port is valid by checking
for a non-zero phy field.
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
The RealTek 2.5G PHY providing the WAN port of the Netgear WAX206 has
previously been hard-coded in the device tree. Now that the PHY can be
probed correctly also via Clause-45 MDIO, use that instead.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Early versions (?) of the RTL8221B PHY cannot be identified in a regular
Clause-45 bus scan as the PHY doesn't report the implemented MMDs
correctly but returns 0 instead.
Implement custom identify function using the PKGID instead of iterating
over the implemented MMDs to work-around this problem.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit adds factory.bin image for TP-Link EC330-G5u v1. This allows
to install OpenWrt without connecting a serial cable (UART).
Installation using factory image
--------------------------------
Tested with "3.16.0 0.9.1 v6037.0 Build 191016 Rel.30619nb" TP-Link
firmware.
1. Login to the router web interface (http://192.168.0.1/ by default) and
save running config to "conf.bin" file
2. Open configuration file in any TP-Link config editor (e.g.
https://jahed.github.io/tp-link-config-editor/)
3. Find "DeviceInfo" section and insert a new string "<Description
val="Modem Router`telnetd -p 1023 -l login`" />" according to the
following example:
<DeviceInfo>
...
<Description val="Modem Router`telnetd -p 1023 -l login`" />
...
</DeviceInfo>
4. Save configuration file and upload changed configuration using stock
firmware interface
5. Login using telnet to IP:192.168.0.1 (Username:admin, password:1234)
6. Run "cat /proc/mtd | grep mtd7"
a. If the result is 'mtd7: 03000000 00020000 "rootfs" 03400000',
then install stock firmware using web interface to toggle booted
firmware image from "os1" to "os0"
b. If the result is 'mtd7: 03000000 00020000 "rootfs" 00400000',
then all is ok, go to the next step
7. Set up a tftp server with OpenWrt factory.bin image (IP:192.168.0.100
in this example)
8. Login using telnet to 192.168.0.1
9. Download OpenWrt factory.bin image from the tftp server:
cd /tmp
tftp -g -r factory.bin 192.168.0.100
10. Write OpenWrt factory.bin image:
dd if=/tmp/factory.bin of=/dev/mtdblock1
11. Power cycle the router
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
The TP-Link EC330-G5u v1 router has MAC address that stored in factory mtd
in ascii format. This commit makes the router use of "mac-address-ascii"
in dts.
After the change:
1. All MAC addresses are explicitly assigned in dts (the workarounds in
network scripts are no longer needed);
2. gmac0 (eth0) MAC address is no longer random.
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
* Delete unused lantiq makefile
* Delete redundant makefiles and unify them into the main makefile
* Refactor and unify board code into a single file
* Add support and review subtarget specific board support
Signed-off-by: Antonio Vázquez <antoniovazquezblanco@gmail.com>
This deactivates the kernel option CONFIG_OABI_COMPAT.
The old arm OABI is not needed any more, we compile all applications for
the new ARM EABI.
This reduces the attack surface of the kernel syscall interface.
On all other targets CONFIG_OABI_COMPAT is already deactivated.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This deactivates the CONFIG_COMPAT kernel option.
With CONFIG_COMPAT the kernel will provide syscall interfaces for arm32
binaries in addition to the interfaces needed for arm64 binaries.
In OpenWrt the complete userspace is compiled for this specific
architecture and support for 32 bit ARM applications is not needed.
This reduces the size and the attack surface for the systems.
On all other targets CONFIG_COMPAT is already deactivated.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The legacy (BSD) PTY support could open security problems in a system,
We do not need them in OpenWrt, deactivate this option in all targets.
Debian also deactivates this option.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This activates the CONFIG_ARM64_SW_TTBR0_PAN option for all arm64
kernels by default.
The CONFIG_ARM64_SW_TTBR0_PAN option prevents the kernel form accessing
user space memory directly. This makes it harder to exploit the kernel.
This is activated by default and was already activate on all other arm64
targets before.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This activates CONFIG_HARDENED_USERCOPY for the remaining targets. This
adds additional checks in the copy_from_user() and copy_to_user()
functions.
This was not activated for ARCHS38 before because of a bug in the Linux
kernel 5.4 till 5.14, which as fixed and is described here:
https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/15
I do not know why this was deactivated for mt7629 and rockchip.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The ZyXEL WSM20 aka Multy M1 is a cheap mesh router system by ZyXEL
based on the MT7621 CPU.
Specifications
==============
SoC: MediaTek MT7621AT (880MHz)
RAM: 256MiB
Flash: 128MiB NAND
Wireless: 802.11ax (2x2 MT7915E DBDC)
Ethernet: 4x 10/100/1000 (MT7530)
Button: 1x WPS, 1x Reset, 1x LED On/Off
LED: 7 LEDs (3x white, 2x red, 2x green)
MAC address assignment
======================
The MAC address assignment follows stock: The label MAC address is the LAN
MAC address, the WAN address is read from flash.
The WiFi MAC addresses are set in userspace to label MAC + 1 and label MAC
+ 2.
Installation (web interface)
============================
The device is cloud-managed, but there is a hidden local firmware upgrade
page in the OEM web interface. The device has to be registered in the
cloud in order to be able to access this page.
The system has a dual firmware design, there is no way to tell which
firmware is currently booted. Therefore, an -initramfs version is flashed
first.
1. Log into the OEM web GUI
2. Access the hidden upgrade page by navigating to
https://192.168.212.1/gui/#/main/debug/firmwareupgrade
3. Upload the -initramfs-kernel.bin file and flash it
4. Wait for OpenWrt to boot and log in via SSH
5. Transfer the sysupgrade file via SCP
6. Run sysupgrade to install the image
7. Reboot and enjoy
NB: If the initramfs version was installed in RAS2, the sysupgrade script
sets the boot number to the first partition. A backup has to be performed
manually in case the OEM firwmare should be kept.
Installation (UART method)
==========================
The UART method is more difficult, as the boot loader does not have a
timeout set. A semi-working stock firmware is required to configure it:
1. Attach UART
2. Boot the stock firmware until the message about failsafe mode appears
3. Enter failsafe mode by pressing "f" and "Enter"
4. Type "mount_root"
5. Run "fw_setenv bootmenu_delay 3"
6. Reboot, U-Boot now presents a menu
7. The -initramfs-kernel.bin image can be flashed using the menu
8. Run the regular sysupgrade for a permanent installation
Changing the partition to boot is a bit cumbersome in U-Boot, as there is
no menu to select it. It can only be checked using mstc_bootnum. To change
it, issue the following commands in U-Boot:
nand read 1800000 53c0000 800
mw.b 1800004 1 1
nand erase 53c0000 800
nand write 1800000 53c0000 800
This selects FW1. Replace "mw.b 1800004 1 1" by "mw.b 1800004 2 1" to
change to the second slot.
Back to stock
=============
It is possible to flash back to stock, but a OEM firmware upgrade is
required. ZyXEL does not provide the link on its website, but the link
can be acquired from the OEM web GUI by analyzing the transferred JSON
objects.
It is then a matter of writing the firmware to Kernel2 and setting the
boot partition to FW2:
mtd write zyxel.bin Kernel2
echo -ne "\x02" | dd of=/dev/mtdblock7 count=1 bs=1 seek=4 conv=notrunc
Signed-off-by: Andreas Böhler <dev@aboehler.at>
Credits to forum users Annick and SirLouen for their initial work on this
device
In MBIM interfaces, DNS servers may be provided out-of-band regardless
whether DHCP is used for configuration, or not. Move the DNS
configuration outside "if" blocks to support that.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Beginnings and endings of sub-interface creation procedure were
literally duplicates - extract them outside if "if" blocks
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Allow setting interface MTU through UCI. If this is not set,
use MBIM-provided MTU, if provided through control channel.
If separate MTUs are provided for IPv4 and IPv6, apply larger of them.
This is very unlikely and possible only for IPv4v6 dual-stack configuration.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Delegate prefixes received through MBIM control channel the same way, as
would be done through DHCP, according to RFC7278.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
MBIM supports multiple values for IP address and DNS server, and such
configuration is available through output of MBIM. Use new helper
method to support adding multiple addresses and DNS servers to static
interfaces for both IPv4 and IPv6.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Add a new helper to extract IP configuration from umbim output. This is
required to extract fields which can possibly have multiple values,
namely IP addresses and DNS servers, and get rid of primitive parser
using 'eval' builtin without support for this.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Display full configuration obtained using MBIM control channel in the
log, from umbim output verbatim, for easier troubleshooting, and in
preparation for parser refactoring.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Inspired by commti e51aa699f7, allow setting specific routing tables
via ip4table and ip6table options, by passing them on child interfaces
created by MBIM protocol handler.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Finally, inspired by ModemManager's logic, make static configuration
obtained through MBIM control channel, preferred.
If IP configuration is not available this way, fallback to DHCP(v6) if
enabled, else do not create a sub-interface for unavailable IP type.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Now, that sub-interface setup is split by IP type, and separate checks
are performed for DHCP selection, it is possible to control DHCP on v4
an v6 sub-interfaces instantly. Add "dhcpv6" variable, akin to QMI
option, to control behaviour of DHCPv6 separately from IPv4 option,
which is required for some mobile operators.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Check whether interface is configured per IP type, not per DHCP. This is
preparation to allow fallback to DHCP if static IP configuration is not
available, which is the default option for MBIM modems
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Fix an issue where subinterfaces were not added to the same
firewall zone as their parent.
Inspired by 64bb88841f.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
MBIM protocol handler should intherit "peerdns" options from parent
interface on sub-interfaces, otherwise upstream DNS servers are applied
regardless of configuration.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Previously, DHCP was used. According to MBIM Specification v1.0 errata 1 [1],
section 10.5.20, MBIM_CID_IP_CONFIGURATION,
if MBIM information element containing IP configuration is available,
host shall use it, and fall back to in-band mechanisms to acquire it therwise -
therefore make static configuration the default.
[1] https://www.usb.org/document-library/mobile-broadband-interface-model-v10-errata-1-and-adopters-agreement
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Current implementation needlessly creates both IPv4 and IPv6
sub-interfaces for single-stack IP types. Limit this only to selected IP
type. While at that, ensure that IP type is also passed to umbim during
"connect" phase. In addition, detect the actual established connection
type returned by umbim and set up subinterfaces according to that,
not to requested configuration. While at that, allow empty IP type explicitly,
interpreted as "any" according to MBIM specification.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Subsequent calls to 'umbim connect' do not have any effect if a failure
occured, and in such case an infinite loop without timeout is created,
leading to possibility of interface stuck at connecting forever.
Drop this loop, and issue MBIM disconnect properly, so netifd can
restart from scratch.
This issue can be observed with Sierra EM7455 at changing APN, which
causes network re-registration by default, and a MBIM transaction
timeout, which is resolved on next interface bringup by netifd.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Previous implementation automatically set up connections for both IPv4
and IPv6, even if one of them isn't supported. Respect the "pdptype"
option in the same way, as it is done for QMI or NCM, and only start the
respective PDN sessions, if set.
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
There are mbim compatible wwan modules available which do not support
the dhcp autoconfiguration. (e.g. gemalto Cinterion ELS81)
This adds the possibility to get the configuration parameters from mbim.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
This activates the CONFIG_SCHED_STACK_END_CHECK option.
The kernel will check if the kernel stack overflowed in the schedule()
function. This just adds a very small computational overhead.
This option is activated in Debian by default.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This activates some extra checks in SLAB or SLUB to make it harder to
execute kernel heap exploits. This adds a minor performance
degradation which I haven't measured-.
Many mainstream Linux distributions also activate this option.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This activates the following kernel options by default:
* CONFIG_RANDOM_TRUST_CPU
* CONFIG_RANDOM_TRUST_BOOTLOADER
With these option Linux will also use data from the CPU RNG e.g. RDRAND
and the bootloader to initialize the Linux RNG if such sources are
available.
These random bits are used in addition to the other sources, no other
sources are getting deactivated. I read that the Chacha mixer isn't
vulnerable to injected entropy, so this should not be a problem even if
these sources might inject bad random data.
The Linux kernel suggests to activate both options, Debian also
activates them. This does not increase kernel code size.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This applies commit 02ac9c94 to fix this OpenSSL Security Advisory
issued on 20th April 2023[1]:
Input buffer over-read in AES-XTS implementation on 64 bit ARM
(CVE-2023-1255)
==============================================================
Severity: Low
Issue summary: The AES-XTS cipher decryption implementation for 64 bit
ARM platform contains a bug that could cause it to read past the input
buffer, leading to a crash.
Impact summary: Applications that use the AES-XTS algorithm on the 64
bit ARM platform can crash in rare circumstances. The AES-XTS algorithm
is usually used for disk encryption.
The AES-XTS cipher decryption implementation for 64 bit ARM platform
will read past the end of the ciphertext buffer if the ciphertext size
is 4 mod 5 in 16 byte blocks, e.g. 144 bytes or 1024 bytes. If the
memory after the ciphertext buffer is unmapped, this will trigger a
crash which results in a denial of service.
If an attacker can control the size and location of the ciphertext
buffer being decrypted by an application using AES-XTS on 64 bit ARM,
the application is affected. This is fairly unlikely making this issue a
Low severity one.
1. https://www.openssl.org/news/secadv/20230420.txt
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
