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linux/drivers/isdn
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Ben Hutchings 82185755d9 ppp, slip: Validate VJ compression slot parameters completely 
[ Upstream commit 4ab42d78e3 ]

Currently slhc_init() treats out-of-range values of rslots and tslots
as equivalent to 0, except that if tslots is too large it will
dereference a null pointer (CVE-2015-7799).

Add a range-check at the top of the function and make it return an
ERR_PTR() on error instead of NULL.  Change the callers accordingly.

Compile-tested only.

Reported-by: 郭永刚 <guoyonggang@360.cn>
References: http://article.gmane.org/gmane.comp.security.oss.general/17908
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
History 2016-02-15 15:42:45 -05:00
..
act2000 isdn: replace del_timer by del_timer_sync 2014-03-27 15:28:06 -04:00
capi isdn/capi: don't return NULL from capi_cmd2str() 2014-10-14 15:05:35 -04:00
divert isdn: divert, hysdn: fix interruptible_sleep_on race 2014-02-26 16:06:13 -05:00
gigaset isdn/gigaset: reset tty->receive_room when attaching ser_gigaset 2015-09-28 18:57:00 -04:00
hardware drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef 2014-08-22 11:31:30 -07:00
hisax isdn: hisax: l3ni1.c: Fix for possible null pointer dereference 2014-07-08 16:06:21 -07:00
hysdn isdn: divert, hysdn: fix interruptible_sleep_on race 2014-02-26 16:06:13 -05:00
i4l ppp, slip: Validate VJ compression slot parameters completely 2016-02-15 15:42:45 -05:00
icn isdn: icn: buffer overflow in icn_command() 2014-04-16 15:24:15 -04:00
isdnloop isdnloop: several buffer overflows 2014-04-08 12:41:13 -04:00
mISDN mISDN: remove DSP_NEVER_DEFINED and adjust code identation 2014-09-05 22:20:21 -07:00
pcbit ISDN: pcbit: off by one bugs in pcbit_set_msn() 2014-07-31 22:14:54 -07:00
sc isdn: replace del_timer by del_timer_sync 2014-03-27 15:28:06 -04:00
Kconfig tty: Added a CONFIG_TTY option to allow removal of TTY 2013-01-18 16:15:27 -08:00
Makefile mISDN fix main ISDN Makefile 2008-08-02 16:28:20 +02:00