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Christoph Paasch f2feaefdab tcp: Don't access TCP_SKB_CB before initializing it 
Since commit eeea10b83a ("tcp: add
tcp_v4_fill_cb()/tcp_v4_restore_cb()"), tcp_vX_fill_cb is only called
after tcp_filter(). That means, TCP_SKB_CB(skb)->end_seq still points to
the IP-part of the cb.

We thus should not mock with it, as this can trigger bugs (thanks
syzkaller):
[   12.349396] ==================================================================
[   12.350188] BUG: KASAN: slab-out-of-bounds in ip6_datagram_recv_specific_ctl+0x19b3/0x1a20
[   12.351035] Read of size 1 at addr ffff88006adbc208 by task test_ip6_datagr/1799

Setting end_seq is actually no more necessary in tcp_filter as it gets
initialized later on in tcp_vX_fill_cb.

Cc: Eric Dumazet <edumazet@google.com>
Fixes: eeea10b83a ("tcp: add tcp_v4_fill_cb()/tcp_v4_restore_cb()")
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-11 15:36:49 -07:00
arch y2038: fix socket.h header inclusion 2019-03-11 11:06:00 -07:00
block
certs
crypto
Documentation dt-bindings: net: stmmac: remove syscfg clock property 2019-03-08 11:48:19 -08:00
drivers net: thunder: fix a potential NULL pointer dereference 2019-03-11 13:34:31 -07:00
firmware
fs
include y2038: fix socket.h header inclusion 2019-03-11 11:06:00 -07:00
init
ipc
kernel bpf: fix replace_map_fd_with_map_ptr's ldimm64 second imm field 2019-03-07 08:47:13 -08:00
lib
LICENSES
mm
net tcp: Don't access TCP_SKB_CB before initializing it 2019-03-11 15:36:49 -07:00
samples bpf: hbm: fix spelling mistake "deault" -> "default" 2019-03-07 10:35:00 +01:00
scripts
security
sound
tools bpf, libbpf: fixing leak when kernel does not support btf 2019-03-08 21:16:36 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
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MAINTAINERS appletalk: Add atalk.h header files to MAINTAINERS file 2019-03-06 10:46:43 -08:00
Makefile
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.