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Filename Latest commit message Latest commit date
Hangyu Hua f4248bdb7d xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup() 
[ Upstream commit f85daf0e725358be78dfd208dea5fd665d8cb901 ]

xfrm_policy_lookup() will call xfrm_pol_hold_rcu() to get a refcount of
pols[0]. This refcount can be dropped in xfrm_expand_policies() when
xfrm_expand_policies() return error. pols[0]'s refcount is balanced in
here. But xfrm_bundle_lookup() will also call xfrm_pols_put() with
num_pols == 1 to drop this refcount when xfrm_expand_policies() return
error.

This patch also fix an illegal address access. pols[0] will save a error
point when xfrm_policy_lookup fails. This lead to xfrm_pols_put to resolve
an illegal address in xfrm_bundle_lookup's error path.

Fix these by setting num_pols = 0 in xfrm_expand_policies()'s error path.

Fixes: 80c802f307 ("xfrm: cache bundles instead of policies for outgoing flows")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-07-29 17:14:10 +02:00
arch riscv: add as-options for modules with assembly compontents 2022-07-29 17:14:08 +02:00
block
certs
crypto
Documentation ipv4: Fix data-races around sysctl_ip_dynaddr. 2022-07-21 20:59:22 +02:00
drivers serial: mvebu-uart: correctly report configured baudrate value 2022-07-29 17:14:09 +02:00
fs
include
init
ipc
kernel signal handling: don't use BUG_ON() for debugging 2022-07-21 20:59:27 +02:00
lib
LICENSES
mm
net xfrm: xfrm_policy: fix a possible double xfrm_pols_put() in xfrm_bundle_lookup() 2022-07-29 17:14:10 +02:00
samples
scripts
security lockdown: Fix kexec lockdown bypass with ima policy 2022-07-29 17:14:09 +02:00
sound ASoC: madera: Fix event generation for rate controls 2022-07-21 20:59:26 +02:00
tools
usr
virt
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.cocciconfig
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Makefile Linux 5.4.207 2022-07-21 20:59:29 +02:00
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.