1
0
Fork 0
alistair23-linux/net/core
Davide Caratti ba203b92a8 net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl
[ Upstream commit 13de4ed9e3 ]

skb_mpls_dec_ttl() reads the LSE without ensuring that it is contained in
the skb "linear" area. Fix this calling pskb_may_pull() before reading the
current ttl.

Found by code inspection.

Fixes: 2a2ea50870 ("net: sched: add mpls manipulation actions to TC")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/r/53659f28be8bc336c113b5254dc637cc76bbae91.1606987074.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-08 10:40:26 +01:00
..
Makefile bpf: Introduce bpf sk local storage 2019-04-27 09:07:04 -07:00
bpf_sk_storage.c bpf: Improve bucket_log calculation logic 2020-02-14 16:34:10 -05:00
datagram.c net: use indirect call wrappers for skb_copy_datagram_iter() 2020-05-02 08:49:00 +02:00
datagram.h net/core: Allow the compiler to verify declaration and definition consistency 2019-03-27 13:49:44 -07:00
dev.c net: Fix bridge enslavement failure 2020-09-26 18:03:13 +02:00
dev_addr_lists.c net: remove unnecessary variables and callback 2019-10-24 14:53:49 -07:00
dev_ioctl.c net/core: Document all dev_ioctl() arguments 2019-03-27 13:49:43 -07:00
devlink.c devlink: Hold rtnl lock while reading netdev attributes 2020-12-08 10:40:23 +01:00
drop_monitor.c drop_monitor: work around gcc-10 stringop-overflow warning 2020-05-20 08:20:06 +02:00
dst.c net: print proper warning on dst underflow 2019-09-26 09:05:56 +02:00
dst_cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ethtool.c net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol() 2019-10-26 11:20:10 -07:00
failover.c failover: allow name change on IFF_UP slave interfaces 2019-04-10 22:12:26 -07:00
fib_notifier.c net: fib_notifier: move fib_notifier_ops from struct net into per-net struct 2019-09-07 17:28:22 +02:00
fib_rules.c net: fib_rules: Correctly set table field when table number exceeds 8 bits 2020-03-05 16:43:31 +01:00
filter.c net: Properly typecast int values to set sk_max_pacing_rate 2020-10-29 09:57:26 +01:00
flow_dissector.c flow_dissector: Drop BPF flow dissector prog ref on netns cleanup 2020-05-27 17:46:49 +02:00
flow_offload.c net: core: rename indirect block ingress cb function 2019-12-18 16:08:47 +01:00
gen_estimator.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gen_stats.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gro_cells.c gro_cells: make sure device is up in gro_cells_receive() 2019-03-10 11:07:14 -07:00
hwbm.c net: hwbm: Make the hwbm_pool lock a mutex 2019-06-09 19:40:10 -07:00
link_watch.c net: link_watch: prevent starvation when processing linkwatch wq 2019-07-01 19:02:47 -07:00
lwt_bpf.c net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2019-12-18 16:08:42 +01:00
lwtunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
neighbour.c Exempt multicast addresses from five-second neighbor lifetime 2020-11-24 13:28:56 +01:00
net-procfs.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
net-sysfs.c net-sysfs: add a newline when printing 'tx_timeout' by sysfs 2020-07-31 18:39:30 +02:00
net-sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net-traces.c page_pool: add tracepoints for page_pool with details need by XDP 2019-06-19 11:23:13 -04:00
net_namespace.c netns: fix GFP flags in rtnl_net_notifyid() 2019-10-25 20:14:42 -07:00
netclassid_cgroup.c cgroup, netclassid: remove double cond_resched 2020-05-10 10:31:32 +02:00
netevent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netpoll.c net: Have netpoll bring-up DSA management interface 2020-11-24 13:28:57 +01:00
netprio_cgroup.c netprio_cgroup: Fix unlimited memory leak of v2 cgroups 2020-05-20 08:20:12 +02:00
page_pool.c page_pool: do not release pool until inflight == 0. 2019-12-18 16:09:07 +01:00
pktgen.c net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build 2020-04-01 11:02:18 +02:00
ptp_classifier.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
request_sock.c tcp: add rcu protection around tp->fastopen_rsk 2019-10-13 10:13:08 -07:00
rtnetlink.c rtnetlink: Fix memory(net_device) leak when ->newlink fails 2020-07-31 18:39:30 +02:00
scm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
secure_seq.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
skbuff.c net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl 2020-12-08 10:40:26 +01:00
skmsg.c bpf, sockmap: Avoid returning unneeded EAGAIN when redirecting to self 2020-11-24 13:29:19 +01:00
sock.c socket: don't clear SOCK_TSTAMP_NEW when SO_TIMESTAMPNS is disabled 2020-11-01 12:01:01 +01:00
sock_diag.c sock: make cookie generation global instead of per netns 2019-08-09 13:14:46 -07:00
sock_map.c bpf: sockmap: Require attach_bpf_fd when detaching a program 2020-08-07 09:34:02 +02:00
sock_reuseport.c udp: Copy has_conns in reuseport_grow(). 2020-07-31 18:39:31 +02:00
stream.c tcp: make sure EPOLLOUT wont be missed 2019-08-19 13:07:43 -07:00
sysctl_net_core.c bpf: Check correct cred for CAP_SYSLOG in bpf_dump_raw_ok() 2020-07-16 08:16:45 +02:00
timestamping.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
tso.c net: Use skb accessors in network core 2019-07-22 20:47:56 -07:00
utils.c net: Fix skb->csum update in inet_proto_csum_replace16(). 2020-02-05 21:22:52 +00:00
xdp.c xdp: obtain the mem_id mutex before trying to remove an entry. 2019-12-18 16:09:10 +01:00