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kernel_samsung_a53x/drivers/net
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Jan Beulich d4180781e9 xen-netback: don't produce zero-size SKB frags 
commit c7ec4f2d684e17d69bbdd7c4324db0ef5daac26a upstream.

While frontends may submit zero-size requests (wasting a precious slot),
core networking code as of at least 3ece782693c4b ("sock: skb_copy_ubufs
support for compound pages") can't deal with SKBs when they have all
zero-size fragments. Respond to empty requests right when populating
fragments; all further processing is fragment based and hence won't
encounter these empty requests anymore.

In a way this should have been that way from the beginning: When no data
is to be transferred for a particular request, there's not even a point
in validating the respective grant ref. That's no different from e.g.
passing NULL into memcpy() when at the same time the size is 0.

This is XSA-448 / CVE-2023-46838.

Cc: stable@vger.kernel.org
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-18 12:12:45 +01:00
..
appletalk Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arcnet arcnet: restoring support for multiple Sohard Arcnet cards 2024-11-18 12:11:39 +01:00
bonding bonding: stop the device in bond_setup_by_slave() 2024-11-18 11:43:19 +01:00
caif Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
can can: dev: can_restart(): fix race condition between controller restart and netif_carrier_on() 2024-11-18 11:42:49 +01:00
dropdump Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dsa net: dsa: lan9303: consequently nested-lock physical MDIO 2024-11-18 11:43:30 +01:00
ethernet net: ethernet: mtk_eth_soc: remove duplicate if statements 2024-11-18 12:12:45 +01:00
fddi Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fjes Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hamradio Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hippi Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hyperv hv_netvsc: rndis_filter needs to select NLS 2024-11-18 12:11:39 +01:00
ieee802154 net: ieee802154: adf7242: Fix some potential buffer overflow in adf7242_stats_show() 2024-11-18 10:58:29 +01:00
ipa Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ipvlan ipvlan: add ipvlan_route_v6_outbound() helper 2024-11-18 11:43:19 +01:00
mdio Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netdevsim Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pcs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
phy net: phylink: initialize carrier state at creation 2024-11-18 11:43:30 +01:00
plip Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ppp ppp: limit MRU to 64K 2024-11-18 11:43:19 +01:00
slip Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
team team: Fix use-after-free when an option instance allocation fails 2024-11-18 12:11:57 +01:00
usb asix: Add check for usbnet_get_endpoints 2024-11-18 12:12:07 +01:00
vmxnet3 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vxlan Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wan Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wimax Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wireguard wireguard: use DEV_STATS_INC() 2024-11-18 12:10:54 +01:00
wireless wifi: rtlwifi: rtl8192se: using calculate_bit_shift() 2024-11-18 12:12:38 +01:00
xen-netback xen-netback: don't produce zero-size SKB frags 2024-11-18 12:12:45 +01:00
bareudp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dummy.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
eql.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
geneve.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gtp.c gtp: fix fragmentation needed check with gso 2024-11-18 10:58:30 +01:00
ifb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
LICENSE.SRC Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
loopback.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
macsec.c net: macsec: indicate next pn update when offloading 2024-11-08 11:25:46 +01:00
macvlan.c macvlan: Don't propagate promisc change to lower dev in passthru 2024-11-18 11:43:20 +01:00
macvtap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mdio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mii.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
net_failover.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netconsole.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nlmon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ntb_netdev.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rionet.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sb1000.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Space.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sungem_phy.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
thunderbolt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tun.c tun: prevent negative ifindex 2024-11-08 11:26:10 +01:00
veth.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
virtio_net.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vrf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vsockmon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xen-netfront.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00