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Filename Latest commit message Latest commit date
Eric Dumazet 473426a1d5 net: add more sanity checks to qdisc_pkt_len_init()
[ Upstream commit ab9a9a9e9647392a19e7a885b08000e89c86b535 ]

One path takes care of SKB_GSO_DODGY, assuming
skb->len is bigger than hdr_len.

virtio_net_hdr_to_skb() does not fully dissect TCP headers,
it only make sure it is at least 20 bytes.

It is possible for an user to provide a malicious 'GSO' packet,
total length of 80 bytes.

- 20 bytes of IPv4 header
- 60 bytes TCP header
- a small gso_size like 8

virtio_net_hdr_to_skb() would declare this packet as a normal
GSO packet, because it would see 40 bytes of payload,
bigger than gso_size.

We need to make detect this case to not underflow
qdisc_skb_cb(skb)->pkt_len.

Fixes: 1def9238d4 ("net_sched: more precise pkt_len computation")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:36 +01:00
arch riscv: Fix fp alignment bug in perf_callchain_user() 2024-11-08 16:20:32 +01:00
block block, bfq: don't break merge chain in bfq_split_bfqq() 2024-11-08 16:20:28 +01:00
certs
crypto crypto: aead,cipher - zeroize key buffer after use 2024-11-08 16:20:33 +01:00
Documentation ipmi: docs: don't advertise deprecated sysfs entries 2024-11-08 16:20:29 +01:00
drivers net: ethernet: lantiq_etop: fix memory disclosure 2024-11-08 16:20:36 +01:00
fs ceph: remove the incorrect Fw reference check when dirtying pages 2024-11-08 16:20:35 +01:00
include netfilter: uapi: NFTA_FLOWTABLE_HOOK is NLA_NESTED 2024-11-08 16:20:35 +01:00
init
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel bpf: Fix bpf_strtol and bpf_strtoul helpers for 32bit 2024-11-08 16:20:31 +01:00
lib debugobjects: Fix conditions in fill_pool() 2024-11-08 16:20:34 +01:00
LICENSES
mm mm: only enforce minimum stack gap size if it's sensible 2024-11-08 16:20:35 +01:00
net net: add more sanity checks to qdisc_pkt_len_init() 2024-11-08 16:20:36 +01:00
samples
scripts scripts: kconfig: merge_config: config files: add a trailing newline 2024-11-08 16:20:24 +01:00
security smackfs: Use rcu_assign_pointer() to ensure safe assignment in smk_set_cipso 2024-11-08 16:20:30 +01:00
sound ASoC: meson: axg-card: fix 'use-after-free' 2024-11-08 16:20:34 +01:00
tools perf time-utils: Fix 32-bit nsec parsing 2024-11-08 16:20:31 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-11-08 16:20:33 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.284 2024-09-12 11:03:57 +02:00
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