linux-stable.git/drivers/net/usb, branch master

usbnet: gl620a: fix out-of-bounds read in genelink_rx_fixup()

2026-06-30T01:54:46+00:00

genelink_rx_fixup() splits an aggregated RX frame into its individual
packets, using a per-packet length taken from device-supplied data. That
length is only bounded by GL_MAX_PACKET_LEN (1514); it is never compared
against how many bytes were actually received.

A malicious GeneLink (GL620A) device can therefore send a short URB whose
header claims packet_count > 1 and a first packet of up to 1514 bytes.

	skb_put_data(gl_skb, packet->packet_data, size);

then copies past the end of the receive buffer and hands the adjacent slab
contents up the network stack, an out-of-bounds read that leaks kernel heap.
No privilege is required: the path runs in the usbnet RX softirq as soon as
the interface is up.

  BUG: KASAN: slab-out-of-bounds in genelink_rx_fixup (drivers/net/usb/gl620a.c:112)
  Read of size 1514 at addr ffff888011309708 by task ksoftirqd/0/14
  Call Trace:
    ...
    __asan_memcpy (mm/kasan/shadow.c:105)
    genelink_rx_fixup (include/linux/skbuff.h:2814 drivers/net/usb/gl620a.c:112)
    usbnet_bh (drivers/net/usb/usbnet.c:572 drivers/net/usb/usbnet.c:1589)
    process_one_work (kernel/workqueue.c:3322)
    bh_worker (kernel/workqueue.c:3405)
    tasklet_action (kernel/softirq.c:965)
    handle_softirqs (kernel/softirq.c:622)
    run_ksoftirqd (kernel/softirq.c:1076)
    ...

skb_pull() already verifies that the requested length fits the buffer and
returns NULL otherwise. Move it ahead of the copy and check its result, so
a packet that overruns the received data is rejected before it is read.
Well-formed frames, whose packets are fully present, are unaffected.

Fixes: 47ee3051c856 ("[PATCH] USB: usbnet (5/9) module for genesys gl620a cables")
Reported-by: Weiming Shi 
Signed-off-by: Xiang Mei 
Link: https://patch.msgid.link/20260627205353.4000788-1-xmei5@asu.edu
Signed-off-by: Jakub Kicinski

net: usb: kalmia: bound RX frame length in kalmia_rx_fixup()

2026-06-25T02:00:07+00:00

kalmia_rx_fixup() computes usb_packet_length = skb->len - (2 *
KALMIA_HEADER_LENGTH) as a u16, guarded only by a pre-loop check that
skb->len is at least KALMIA_HEADER_LENGTH, which is 6. A device can
deliver a short bulk-IN frame with skb->len in the 6 to 11 range, or
leave a short trailing remainder on a later loop iteration. Either case
underflows usb_packet_length to about 65530.

That bypasses the usb_packet_length < ether_packet_length truncation path.
The device-supplied ether_packet_length, a le16 up to 65535 read from
header_start[2], then drives a memcmp() and the following skb_trim() and
skb_pull() past the end of the rx buffer. The rx buffer is hard_mtu * 10,
which is 14000 bytes. That is an out of bounds read.

Require both the start and end framing headers to be present before
subtracting them, on every loop iteration.

Fixes: d40261236e8e ("net/usb: Add Samsung Kalmia driver for Samsung GT-B3730")
Cc: stable@vger.kernel.org
Signed-off-by: Maoyi Xie 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/178211531778.2216480.12637613349790980750@maoyixie.com
Signed-off-by: Jakub Kicinski

net: usb: lan78xx: restore VLAN and hash filters after link up

2026-06-23T21:50:06+00:00

Configured VLANs intermittently stop receiving traffic after a link
down/up cycle, e.g. when the network cable is unplugged and plugged back
in. VLAN filtering stays enabled but all VLAN-tagged frames are dropped
until a VLAN is added or removed again.

The LAN7801 datasheet (DS00002123E) states:

  "A portion of the MAC operates on clocks generated by the Ethernet
   PHY. During a PHY reset event, this portion of the MAC is designed to
   not be taken out of reset until the PHY clocks are operational"
  (section 8.10, MAC Reset Watchdog Timer)

  "After a reset event, the RFE will automatically initialize the
   contents of the VHF to 0h."
  (section 7.1.4, VHF Organization)

Thus a link down/up cycle stops and restarts the PHY clock, resets the
PHY-clocked portion of the MAC, and the RFE clears its VLAN/DA hash
filter (VHF) memory. The VHF holds both the VLAN filter table and the
multicast hash table, but the driver never reprograms either from its
shadow copy once the link is back, so both stay empty.

Reprogram the VLAN filter and multicast hash tables on link up.

Reported-by: Sven Schuchmann 
Closes: https://lore.kernel.org/netdev/BEZP281MB224501E38B30BFDC4BD3D364D9E32@BEZP281MB2245.DEUP281.PROD.OUTLOOK.COM/T/#u
Tested-by: Sven Schuchmann 
Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Nicolai Buchwitz 
Link: https://patch.msgid.link/20260622102911.484045-1-nb@tipi-net.de
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-06-11T21:33:35+00:00

Cross-merge networking fixes after downstream PR (net-7.1-rc8).

Conflicts:

drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c
  f67aead16e85 ("net: txgbe: rework service event handling")
  57d39faed4c9 ("net: txgbe: improve functions of AML 40G devices")

net/rds/info.c
  512db8267b73 ("rds: mark snapshot pages dirty in rds_info_getsockopt()")
  6e94eeb2a2a6 ("rds: convert to getsockopt_iter")

Adjacent changes:

include/net/sock.h
  1ee90b77b727 ("net: guard timestamp cmsgs to real error queue skbs")
  f0de88303d5e ("net: make is_skb_wmem() available to modules")

Signed-off-by: Jakub Kicinski

r8152: handle the return value of usb_reset_device()

2026-06-09T09:05:35+00:00

If usb_reset_device() returns a negative error code, stop the
process of probing.

Fixes: 10c3271712f5 ("r8152: disable the ECM mode")
Signed-off-by: Chih Kai Hsu 
Reviewed-by: Hayes Wang 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20260604092247.27158-450-nic_swsd@realtek.com
Signed-off-by: Paolo Abeni

rndis_host: enable power management for Telit LE310X1

2026-06-05T01:10:56+00:00

Enable autosuspend support for Telit Cinterion LE310X1 RNDIS interface
by selecting a driver_info variant with manage_power callback.

This keeps power management scoped to the new Telit ID only, and avoids
changing behavior for all existing RNDIS devices.

Signed-off-by: Shaoxu Liu 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/tencent_B7686B84CD4B76D76BB912FA6367FAC2CA05@qq.com
Signed-off-by: Jakub Kicinski

rndis_host: add Telit LE310X1 RNDIS USB ID

2026-06-05T01:10:56+00:00

Add a device match entry for Telit Cinterion LE310X1 RNDIS interface
(VID:PID 1bc7:7030).

This is a functional no-op and keeps using the generic rndis_info for now.
Power-management behavior is handled in a follow-up patch.

Signed-off-by: Shaoxu Liu 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/tencent_F1AF1F5AD39C56485BD16C6DB2415E5B9508@qq.com
Signed-off-by: Jakub Kicinski

net: usb: qmi_wwan: add MeiG SRM813Q

2026-05-20T23:55:12+00:00

Add support for the Qualcomm Technology Snapdragon X35-based MeiG SRM813Q
module.

The module can be put in different modes via AT commands
to enable/disable GPS functionality:

MODEM - PPP mode(2dee:4d63): AT+SER=1,1

If#= 0: RMNET
If#= 1: DIAG/ADB
If#= 2: MODEM
If#= 3: AT

P:  Vendor=2dee ProdID=4d63 Rev=05.15
S:  Manufacturer=MEIG
S:  Product=LTE-A Module
S:  SerialNumber=1bd51f0e
C:  #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=85(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=87(I) Atr=03(Int.) MxPS=  10 Ivl=32ms

NMEA mode(2dee:4d64): AT+SER=51,1

If#= 0: RMNET
If#= 1: DIAG/ADB
If#= 2: NMEA
If#= 3: AT

P:  Vendor=2dee ProdID=4d64 Rev=05.15
S:  Manufacturer=MEIG
S:  Product=LTE-A Module
S:  SerialNumber=1bd51f0e
C:  #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=82(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=85(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=87(I) Atr=03(Int.) MxPS=  10 Ivl=32ms

Signed-off-by: Jan Volckaert 
Link: https://patch.msgid.link/20260517153237.55995-2-janvolck@gmail.com
Signed-off-by: Jakub Kicinski

net: usb: usbnet: use proper ep number macros

2026-05-15T01:19:03+00:00

We have macros to retrieve endpoint numbers now.
Use them.

Signed-off-by: Oliver Neukum 
Link: https://patch.msgid.link/20260513132916.39896-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski

net: usb: pegasus: replace simple_strtoul with kstrtouint

2026-05-14T01:06:56+00:00

simple_strtoul() is deprecated as it has no error checking. Replace it
with kstrtouint() which returns an error code on invalid input, and add
appropriate error handling.

Also add a NULL check before parsing flags, since strsep() can set id
to NULL if the input has fewer tokens than expected.

Preserve the original behavior for a trailing colon by checking *id
before parsing flags, so an empty string results in flags = 0 rather
than an error.

Signed-off-by: Sajal Gupta 
Link: https://patch.msgid.link/20260509095518.2640-1-sajal2005gupta@gmail.com
Signed-off-by: Jakub Kicinski