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66a675d390
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Herbert Xu 66a675d390 xfrm: Use correct address family in xfrm_state_find 
[ Upstream commit e94ee17134 ]

The struct flowi must never be interpreted by itself as its size
depends on the address family.  Therefore it must always be grouped
with its original family value.

In this particular instance, the original family value is lost in
the function xfrm_state_find.  Therefore we get a bogus read when
it's coupled with the wrong family which would occur with inter-
family xfrm states.

This patch fixes it by keeping the original family value.

Note that the same bug could potentially occur in LSM through
the xfrm_state_pol_flow_match hook.  I checked the current code
there and it seems to be safe for now as only secid is used which
is part of struct flowi_common.  But that API should be changed
so that so that we don't get new bugs in the future.  We could
do that by replacing fl with just secid or adding a family field.

Reported-by: syzbot+577fbac3145a6eb2e7a5@syzkaller.appspotmail.com
Fixes: 48b8d78315 ("[XFRM]: State selection update to use inner...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-14 10:31:25 +02:00
arch arm64: dts: stratix10: add status to qspi dts node 2020-10-14 10:31:22 +02:00
block block: ensure bdi->io_pages is always initialized 2020-09-12 13:40:22 +02:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() 2020-07-09 09:37:10 +02:00
Documentation ata: make qc_prep return ata_completion_errors 2020-10-01 13:14:54 +02:00
drivers platform/x86: fix kconfig dependency warning for FUJITSU_LAPTOP 2020-10-14 10:31:25 +02:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:21:29 +01:00
fs cifs: Fix incomplete memory allocation on setxattr path 2020-10-14 10:31:23 +02:00
include xfrm: clone XFRMA_REPLAY_ESN_VAL in xfrm_do_migrate 2020-10-14 10:31:24 +02:00
init printk: queue wake_up_klogd irq_work only if per-CPU areas are ready 2020-07-22 09:32:13 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:18:40 +02:00
kernel usermodehelper: reset umask to default before executing user process 2020-10-14 10:31:21 +02:00
lib Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts 2020-10-14 10:31:21 +02:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm/khugepaged: fix filemap page_to_pgoff(page) != offset 2020-10-14 10:31:23 +02:00
net xfrm: Use correct address family in xfrm_state_find 2020-10-14 10:31:25 +02:00
samples samples: bpf: Fix build error 2020-06-03 08:19:31 +02:00
scripts checkpatch: fix the usage of capture group ( ... ) 2020-09-09 19:04:32 +02:00
security selinux: sel_avc_get_stat_idx should increase position index 2020-10-01 13:14:33 +02:00
sound ALSA: asihpi: fix iounmap in error handler 2020-10-01 13:14:53 +02:00
tools perf top: Fix stdio interface input handling with glibc 2.28+ 2020-10-14 10:31:22 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:44:59 +02:00
virt KVM: arm64: Assume write fault on S1PTW permission fault on instruction fetch 2020-10-01 13:14:54 +02:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-09-26 18:01:31 +02:00
Makefile Linux 4.19.150 2020-10-07 08:00:09 +02:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.