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Phil Sutter 2acedc5372 net: skb_find_text: Ignore patterns extending past 'to' 
[ Upstream commit c4eee56e14fe001e1cff54f0b438a5e2d0dd7454 ]

Assume that caller's 'to' offset really represents an upper boundary for
the pattern search, so patterns extending past this offset are to be
rejected.

The old behaviour also was kind of inconsistent when it comes to
fragmentation (or otherwise non-linear skbs): If the pattern started in
between 'to' and 'from' offsets but extended to the next fragment, it
was not found if 'to' offset was still within the current fragment.

Test the new behaviour in a kselftest using iptables' string match.

Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fixes: f72b948dcb ("[NET]: skb_find_text ignores to argument")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:51:54 +01:00
..
6lowpan
9p 9p: virtio: make sure 'offs' is initialized in zc_request 2023-09-13 09:42:21 +02:00
802 mrp: introduce active flags to prevent UAF when applicant uninit 2022-12-31 13:33:02 +01:00
8021q vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit() 2023-05-24 17:32:47 +01:00
appletalk
atm atm: hide unused procfs functions 2023-06-09 10:34:16 +02:00
ax25 ax25: move from strlcpy with unused retval to strscpy 2022-08-22 17:55:50 -07:00
batman-adv batman-adv: Hold rtnl lock during MTU update via netlink 2023-08-30 16:11:08 +02:00
bluetooth Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name 2023-10-25 12:03:16 +02:00
bpf Revert "bpf, test_run: fix &xdp_frame misplacement for LIVE_FRAMES" 2023-03-17 08:50:32 +01:00
bpfilter
bridge neighbour: fix data-races around n->output 2023-10-10 22:00:42 +02:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:50:24 +01:00
can can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior 2023-10-19 23:08:52 +02:00
ceph libceph: use kernel_connect() 2023-10-19 23:08:56 +02:00
core net: skb_find_text: Ignore patterns extending past 'to' 2023-11-20 11:51:54 +01:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-11 12:08:17 +02:00
dccp dccp: fix dccp_v4_err()/dccp_v6_err() again 2023-10-06 14:56:39 +02:00
devlink devlink: remove reload failed checks in params get/set callbacks 2023-09-23 11:11:01 +02:00
dns_resolver
dsa net: dsa: sja1105: always enable the send_meta options 2023-07-19 16:22:06 +02:00
ethernet net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
ethtool ipv6: Remove in6addr_any alternatives. 2023-09-19 12:28:10 +02:00
hsr net: hsr: Add __packed to struct hsr_sup_tlv. 2023-10-06 14:56:57 +02:00
ieee802154 net: ieee802154: fix error return code in dgram_bind() 2022-10-07 09:29:17 +02:00
ife
ipv4 tcp_metrics: do not create an entry from tcp_init_metrics() 2023-11-20 11:51:53 +01:00
ipv6 xfrm6: fix inet6_dev refcount underflow problem 2023-10-25 12:03:12 +02:00
iucv net/iucv: Fix size of interrupt data 2023-03-22 13:33:50 +01:00
kcm kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). 2023-09-19 12:28:10 +02:00
key net: af_key: fix sadb_x_filter validation 2023-08-23 17:52:32 +02:00
l2tp ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data() 2023-10-10 22:00:42 +02:00
l3mdev
lapb
llc llc: Don't drop packet from non-root netns. 2023-07-27 08:50:45 +02:00
mac80211 wifi: mac80211: fix # of MSDU in A-MSDU calculation 2023-11-20 11:51:51 +01:00
mac802154 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-05 09:53:08 +01:00
mctp mctp: perform route lookups under a RCU read-side lock 2023-10-19 23:08:57 +02:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-22 12:59:53 +01:00
mptcp mptcp: avoid sending RST when closing the initial subflow 2023-10-25 12:03:16 +02:00
ncsi ncsi: Propagate carrier gain/loss events to the NCSI controller 2023-10-06 14:56:57 +02:00
netfilter netfilter: nf_tables: Drop pointless memset when dumping rules 2023-11-20 11:51:54 +01:00
netlabel netlabel: fix shift wrapping bug in netlbl_catmap_setlong() 2023-09-13 09:42:24 +02:00
netlink netlink: remove the flex array from struct nlmsghdr 2023-10-10 22:00:46 +02:00
netrom netrom: Deny concurrent connect(). 2023-09-13 09:42:35 +02:00
nfc nfc: nci: fix possible NULL pointer dereference in send_acknowledge() 2023-10-25 12:03:04 +02:00
nsh net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() 2023-05-24 17:32:45 +01:00
openvswitch net: openvswitch: reject negative ifindex 2023-08-23 17:52:35 +02:00
packet net/packet: annotate data-races around tp->status 2023-08-16 18:27:26 +02:00
phonet
psample genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
qrtr net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume() 2023-04-20 12:35:09 +02:00
rds net: prevent address rewrite in kernel_bind() 2023-10-19 23:08:50 +02:00
rfkill net: rfkill: gpio: prevent value glitch during probe 2023-10-25 12:03:06 +02:00
rose net/rose: Fix to not accept on connected socket 2023-02-22 12:59:42 +01:00
rxrpc rxrpc: Fix hard call timeout units 2023-05-17 11:53:35 +02:00
sched net: sched: cls_u32: Fix allocation size in u32_init() 2023-11-08 14:10:57 +01:00
sctp sctp: update hb timer immediately after users change hb_interval 2023-10-10 22:00:44 +02:00
smc net/smc: fix smc clc failed issue when netdevice not in init_net 2023-10-25 12:03:13 +02:00
strparser
sunrpc Revert "SUNRPC dont update timeout value on connection reset" 2023-10-06 14:57:03 +02:00
switchdev
tipc tipc: Use size_add() in calls to struct_size() 2023-11-20 11:51:52 +01:00
tls tls: Use size_add() in call to struct_size() 2023-11-20 11:51:52 +01:00
unix af_unix: Fix data-race around unix_tot_inflight. 2023-09-19 12:28:02 +02:00
vmw_vsock vsock/virtio: initialize the_virtio_vsock before using VQs 2023-11-02 09:35:23 +01:00
wireless wifi: cfg80211: add flush functions for wiphy work 2023-11-20 11:51:51 +01:00
x25 net/x25: Fix to not accept on connected socket 2023-02-09 11:28:13 +01:00
xdp xsk: Fix xsk_diag use-after-free error during socket cleanup 2023-09-19 12:28:01 +02:00
xfrm net: xfrm: skip policies marked as dead while reinserting policies 2023-10-25 12:03:12 +02:00
compat.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
devres.c
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile devlink: move code to a dedicated directory 2023-08-30 16:11:00 +02:00
socket.c net: prevent address rewrite in kernel_bind() 2023-10-19 23:08:50 +02:00
sysctl_net.c