Alexey Kodanev 67f93df79a dccp: check sk for closed state in dccp_sendmsg() ...

dccp_disconnect() sets 'dp->dccps_hc_tx_ccid' tx handler to NULL,
therefore if DCCP socket is disconnected and dccp_sendmsg() is
called after it, it will cause a NULL pointer dereference in
dccp_write_xmit().

This crash and the reproducer was reported by syzbot. Looks like
it is reproduced if commit 69c64866ce07 ("dccp: CVE-2017-8824:
use-after-free in DCCP code") is applied.

Reported-by: syzbot+f99ab3887ab65d70f816@syzkaller.appspotmail.com
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2018-03-07 13:38:56 -05:00

..

ccids

dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state

2018-01-26 11:15:00 -05:00

ackvec.c

net: dccp: drop unneeded newline

2018-01-02 13:49:32 -05:00

ackvec.h

net: dccp: Remove extern from function prototypes

2013-10-19 19:12:11 -04:00

ccid.c

dccp: drop null test before destroy functions

2015-09-15 16:49:43 -07:00

ccid.h

net: dccp: Remove extern from function prototypes

2013-10-19 19:12:11 -04:00

dccp.h

net: annotate ->poll() instances

2017-11-27 16:20:04 -05:00

diag.c

sock_diag: specify info_size per inet protocol

2015-06-15 19:49:22 -07:00

feat.c

dccp: fix a memleak for dccp_feat_init err process

2017-07-27 00:01:05 -07:00

feat.h

net: dccp: Remove extern from function prototypes

2013-10-19 19:12:11 -04:00

input.c

net: dccp: mark expected switch fall-throughs

2017-10-16 21:15:21 +01:00

ipv4.c

tcp/dccp: fix other lockdep splats accessing ireq_opt

2017-10-26 17:41:32 +09:00

ipv6.c

net: dccp: Add handling of IPV6_PKTOPTIONS to dccp_v6_do_rcv()

2017-08-31 11:43:47 -07:00

ipv6.h

inet: includes a sock_common in request_sock

2013-10-10 00:08:07 -04:00

Kconfig

net: dccp: Remove dccpprobe module

2018-01-02 14:27:30 -05:00

Makefile

net: dccp: Remove dccpprobe module

2018-01-02 14:27:30 -05:00

minisocks.c

tcp/dccp: avoid one atomic operation for timewait hashdance

2017-12-13 14:33:10 -05:00

options.c

net: dccp: mark expected switch fall-throughs

2017-10-16 21:15:21 +01:00

output.c

sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>

2017-03-02 08:42:32 +01:00

proto.c

dccp: check sk for closed state in dccp_sendmsg()

2018-03-07 13:38:56 -05:00

qpolicy.c

…

sysctl.c

dccp: make the request_retries minimum is 1

2014-05-14 15:34:16 -04:00

timer.c

net: dccp: Convert timers to use timer_setup()

2017-10-25 12:59:19 +09:00

trace.h

net: dccp: Add DCCP sendmsg trace event

2018-01-02 14:27:30 -05:00