android_kernel_samsung_msm8976/drivers/isdn
Ben Hutchings f82699de10 ppp, slip: Validate VJ compression slot parameters completely
[ Upstream commit 4ab42d78e37a294ac7bc56901d563c642e03c4ae ]

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-28 21:49:35 -08:00
..
act2000
capi
divert
gigaset
hardware
hisax
hysdn
i4l ppp, slip: Validate VJ compression slot parameters completely 2016-01-28 21:49:35 -08:00
icn
isdnloop
mISDN
pcbit
sc
Kconfig
Makefile