21 May, 2019
1 commit
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Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not see http www gnu org licensesthis program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details [based]
[from] [clk] [highbank] [c] you should have received a copy of the
gnu general public license along with this program if not see http
www gnu org licensesextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 355 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Kate Stewart
Reviewed-by: Jilayne Lovejoy
Reviewed-by: Steve Winslow
Reviewed-by: Allison Randal
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman
25 Mar, 2019
1 commit
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clang correctly points out a code path that would lead
to an uninitialized variable use:security/selinux/netlabel.c:310:6: error: variable 'addr' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
if (ip_hdr(skb)->version == 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~
security/selinux/netlabel.c:322:40: note: uninitialized use occurs here
rc = netlbl_conn_setattr(ep->base.sk, addr, &secattr);
^~~~
security/selinux/netlabel.c:310:2: note: remove the 'if' if its condition is always true
if (ip_hdr(skb)->version == 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
security/selinux/netlabel.c:291:23: note: initialize the variable 'addr' to silence this warning
struct sockaddr *addr;
^
= NULLThis is probably harmless since we should not see ipv6 packets
of CONFIG_IPV6 is disabled, but it's better to rearrange the code
so this cannot happen.Signed-off-by: Arnd Bergmann
[PM: removed old patchwork link, fixed checkpatch.pl style errors]
Signed-off-by: Paul Moore
21 Mar, 2018
1 commit
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Wrap the AVC state within the selinux_state structure and
pass it explicitly to all AVC functions. The AVC private state
is encapsulated in a selinux_avc structure that is referenced
from the selinux_state.This change should have no effect on SELinux behavior or
APIs (userspace or LSM).Signed-off-by: Stephen Smalley
Reviewed-by: James Morris
Signed-off-by: Paul Moore
02 Mar, 2018
1 commit
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Define a selinux state structure (struct selinux_state) for
global SELinux state and pass it explicitly to all security server
functions. The public portion of the structure contains state
that is used throughout the SELinux code, such as the enforcing mode.
The structure also contains a pointer to a selinux_ss structure whose
definition is private to the security server and contains security
server specific state such as the policy database and SID table.This change should have no effect on SELinux behavior or APIs
(userspace or LSM). It merely wraps SELinux state and passes it
explicitly as needed.Signed-off-by: Stephen Smalley
[PM: minor fixups needed due to collisions with the SCTP patches]
Signed-off-by: Paul Moore
27 Feb, 2018
1 commit
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The SELinux SCTP implementation is explained in:
Documentation/security/SELinux-sctp.rstSigned-off-by: Richard Haines
Signed-off-by: Paul Moore
21 Nov, 2017
1 commit
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A few years ago the FSF moved and "59 Temple Place" is wrong. Having this
still in our source files feels old and unmaintained.Let's take the license statement serious and not confuse users.
As https://www.gnu.org/licenses/gpl-howto.html suggests, we replace the
postal address with "" in the security
directory.Signed-off-by: Martin Kepplinger
Acked-by: Serge Hallyn
Signed-off-by: Paul Moore
28 Jun, 2016
5 commits
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This works in exactly the same way as the CIPSO label cache.
The idea is to allow the lsm to cache the result of a secattr
lookup so that it doesn't need to perform the lookup for
every skbuff.It introduces two sysctl controls:
calipso_cache_enable - enables/disables the cache.
calipso_cache_bucket_size - sets the size of a cache bucket.Signed-off-by: Huw Davies
Signed-off-by: Paul Moore -
This makes it possible to route the error to the appropriate
labelling engine. CALIPSO is far less verbose than CIPSO
when encountering a bogus packet, so there is no need for a
CALIPSO error handler.Signed-off-by: Huw Davies
Signed-off-by: Paul Moore -
Request sockets need to have a label that takes into account the
incoming connection as well as their parent's label. This is used
for the outgoing SYN-ACK and for their child full-socket.Signed-off-by: Huw Davies
Signed-off-by: Paul Moore -
If a socket has a netlabel in place then don't let setsockopt() alter
the socket's IPv6 hop-by-hop option. This is in the same spirit as
the existing check for IPv4.Signed-off-by: Huw Davies
Signed-off-by: Paul Moore -
CALIPSO is a hop-by-hop IPv6 option. A lot of this patch is based on
the equivalent CISPO code. The main difference is due to manipulating
the options in the hop-by-hop header.Signed-off-by: Huw Davies
Signed-off-by: Paul Moore
09 Nov, 2015
1 commit
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Generalize selinux_skb_sk() added in commit 212cd0895330
("selinux: fix random read in selinux_ip_postroute_compat()")
so that we can use it other contexts.Use it right away in selinux_netlbl_skbuff_setsid()
Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
05 Dec, 2013
1 commit
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In selinux_netlbl_skbuff_setsid() we leverage a cached NetLabel
secattr whenever possible. However, we never check to ensure that
the desired SID matches the cached NetLabel secattr. This patch
checks the SID against the secattr before use and only uses the
cached secattr when the SID values match.Signed-off-by: Paul Moore
27 Sep, 2013
1 commit
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The SELinux/NetLabel glue code has a locking bug that affects systems
with NetLabel enabled, see the kernel error message below. This patch
corrects this problem by converting the bottom half socket lock to a
more conventional, and correct for this call-path, lock_sock() call.===============================
[ INFO: suspicious RCU usage. ]
3.11.0-rc3+ #19 Not tainted
-------------------------------
net/ipv4/cipso_ipv4.c:1928 suspicious rcu_dereference_protected() usage!other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
2 locks held by ping/731:
#0: (slock-AF_INET/1){+.-...}, at: [...] selinux_netlbl_socket_connect
#1: (rcu_read_lock){.+.+..}, at: [] netlbl_conn_setattrstack backtrace:
CPU: 1 PID: 731 Comm: ping Not tainted 3.11.0-rc3+ #19
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
0000000000000001 ffff88006f659d28 ffffffff81726b6a ffff88003732c500
ffff88006f659d58 ffffffff810e4457 ffff88006b845a00 0000000000000000
000000000000000c ffff880075aa2f50 ffff88006f659d90 ffffffff8169bec7
Call Trace:
[] dump_stack+0x54/0x74
[] lockdep_rcu_suspicious+0xe7/0x120
[] cipso_v4_sock_setattr+0x187/0x1a0
[] netlbl_conn_setattr+0x187/0x190
[] ? netlbl_conn_setattr+0x5/0x190
[] selinux_netlbl_socket_connect+0xae/0xc0
[] selinux_socket_connect+0x135/0x170
[] ? might_fault+0x57/0xb0
[] security_socket_connect+0x16/0x20
[] SYSC_connect+0x73/0x130
[] ? sysret_check+0x22/0x5d
[] ? trace_hardirqs_on_caller+0xfd/0x1c0
[] ? trace_hardirqs_on_thunk+0x3a/0x3f
[] SyS_connect+0xe/0x10
[] system_call_fastpath+0x16/0x1bCc: stable@vger.kernel.org
Signed-off-by: Paul Moore
02 Aug, 2011
1 commit
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My @hp.com will no longer be valid starting August 5, 2011 so an update is
necessary. My new email address is employer independent so we don't have
to worry about doing this again any time soon.Signed-off-by: Paul Moore
Signed-off-by: Paul Moore
Signed-off-by: David S. Miller
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
06 May, 2010
1 commit
08 Apr, 2010
1 commit
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trying to grep everything that messes with a sk_security_struct isn't easy
since we don't always call it sksec. Just rename everything sksec.Signed-off-by: Eric Paris
Signed-off-by: James Morris
30 Mar, 2010
1 commit
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
04 Dec, 2009
1 commit
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That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.Signed-off-by: André Goddard Rosa
Signed-off-by: Jiri Kosina
17 Aug, 2009
1 commit
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Convert avc_audit in security/selinux/avc.c to use lsm_audit.h,
for better maintainability.- changed selinux to use common_audit_data instead of
avc_audit_data
- eliminated code in avc.c and used code from lsm_audit.h instead.Had to add a LSM_AUDIT_NO_AUDIT to lsm_audit.h so that avc_audit
can call common_lsm_audit and do the pre and post callbacks without
doing the actual dump. This makes it so that the patched version
behaves the same way as the unpatched version.Also added a denied field to the selinux_audit_data private space,
once again to make it so that the patched version behaves like the
unpatched.I've tested and confirmed that AVCs look the same before and after
this patch.Signed-off-by: Thomas Liu
Acked-by: Stephen Smalley
Signed-off-by: James Morris
13 Jul, 2009
2 commits
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This reverts commit 8113a8d80f4c6a3dc3724b39b470f3fee9c426b6.
The patch causes a stack overflow on my system during boot.
Signed-off-by: James Morris
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Convert avc_audit in security/selinux/avc.c to use lsm_audit.h,
for better maintainability and for less code duplication.- changed selinux to use common_audit_data instead of
avc_audit_data
- eliminated code in avc.c and used code from lsm_audit.h instead.I have tested to make sure that the avcs look the same before and
after this patch.Signed-off-by: Thomas Liu
Acked-by: Eric Paris
Signed-off-by: James Morris
28 Mar, 2009
1 commit
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The current NetLabel/SELinux behavior for incoming TCP connections works but
only through a series of happy coincidences that rely on the limited nature of
standard CIPSO (only able to convey MLS attributes) and the write equality
imposed by the SELinux MLS constraints. The problem is that network sockets
created as the result of an incoming TCP connection were not on-the-wire
labeled based on the security attributes of the parent socket but rather based
on the wire label of the remote peer. The issue had to do with how IP options
were managed as part of the network stack and where the LSM hooks were in
relation to the code which set the IP options on these newly created child
sockets. While NetLabel/SELinux did correctly set the socket's on-the-wire
label it was promptly cleared by the network stack and reset based on the IP
options of the remote peer.This patch, in conjunction with a prior patch that adjusted the LSM hook
locations, works to set the correct on-the-wire label format for new incoming
connections through the security_inet_conn_request() hook. Besides the
correct behavior there are many advantages to this change, the most significant
is that all of the NetLabel socket labeling code in SELinux now lives in hooks
which can return error codes to the core stack which allows us to finally get
ride of the selinux_netlbl_inode_permission() logic which greatly simplfies
the NetLabel/SELinux glue code. In the process of developing this patch I
also ran into a small handful of AF_INET6 cleanliness issues that have been
fixed which should make the code safer and easier to extend in the future.Signed-off-by: Paul Moore
Acked-by: Casey Schaufler
Signed-off-by: James Morris
02 Mar, 2009
1 commit
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Rick McNeal from LSI identified a panic in selinux_netlbl_inode_permission()
caused by a certain sequence of SUNRPC operations. The problem appears to be
due to the lack of NULL pointer checking in the function; this patch adds the
pointer checks so the function will exit safely in the cases where the socket
is not completely initialized.Signed-off-by: Paul Moore
Signed-off-by: James Morris
23 Feb, 2009
1 commit
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At some point we (okay, I) managed to break the ability for users to use the
setsockopt() syscall to set IPv4 options when NetLabel was not active on the
socket in question. The problem was noticed by someone trying to use the
"-R" (record route) option of ping:# ping -R 10.0.0.1
ping: record route: No message of desired typeThe solution is relatively simple, we catch the unlabeled socket case and
clear the error code, allowing the operation to succeed. Please note that we
still deny users the ability to override IPv4 options on socket's which have
NetLabel labeling active; this is done to ensure the labeling remains intact.Signed-off-by: Paul Moore
Signed-off-by: James Morris
10 Oct, 2008
5 commits
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Previous work enabled the use of address based NetLabel selectors, which
while highly useful, brought the potential for additional per-packet overhead
when used. This patch attempts to mitigate some of that overhead by caching
the NetLabel security attribute struct within the SELinux socket security
structure. This should help eliminate the need to recreate the NetLabel
secattr structure for each packet resulting in less overhead.Signed-off-by: Paul Moore
Acked-by: James Morris -
Previous work enabled the use of address based NetLabel selectors, which while
highly useful, brought the potential for additional per-packet overhead when
used. This patch attempts to solve that by applying NetLabel socket labels
when sockets are connect()'d. This should alleviate the per-packet NetLabel
labeling for all connected sockets (yes, it even works for connected DGRAM
sockets).Signed-off-by: Paul Moore
Reviewed-by: James Morris -
This patch builds upon the new NetLabel address selector functionality by
providing the NetLabel KAPI and CIPSO engine support needed to enable the
new packet-based labeling. The only new addition to the NetLabel KAPI at
this point is shown below:* int netlbl_skbuff_setattr(skb, family, secattr)
... and is designed to be called from a Netfilter hook after the packet's
IP header has been populated such as in the FORWARD or LOCAL_OUT hooks.This patch also provides the necessary SELinux hooks to support this new
functionality. Smack support is not currently included due to uncertainty
regarding the permissions needed to expand the Smack network access controls.Signed-off-by: Paul Moore
Reviewed-by: James Morris -
At some point I think I messed up and dropped the calls to netlbl_skbuff_err()
which are necessary for CIPSO to send error notifications to remote systems.
This patch re-introduces the error handling calls into the SELinux code.Signed-off-by: Paul Moore
Acked-by: James Morris -
We were doing a lot of extra work in selinux_netlbl_sock_graft() what wasn't
necessary so this patch removes that code. It also removes the redundant
second argument to selinux_netlbl_sock_setsid() which allows us to simplify a
few other functions.Signed-off-by: Paul Moore
Acked-by: James Morris
21 Apr, 2008
1 commit
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This patch changes netlabel.c to fix whitespace and syntax issues. Things that
are fixed may include (does not not have to include)whitespace at end of lines
spaces followed by tabs
spaces used instead of tabs
spacing around parenthesis
locateion of { around struct and else clauses
location of * in pointer declarations
removal of initialization of static data to keep it in the right section
useless {} in if statemetns
useless checking for NULL before kfree
fixing of the indentation depth of switch statements
and any number of other things I forgot to mentionSigned-off-by: Eric Paris
Signed-off-by: James Morris
18 Apr, 2008
2 commits
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Every file should include the headers containing the externs for its
global code.Signed-off-by: Adrian Bunk
Acked-by: Paul Moore
Signed-off-by: James Morris -
The RCU/spinlock locking approach for the nlbl_state in the sk_security_struct
was almost certainly overkill. This patch removes both the RCU and spinlock
locking, relying on the existing socket locks to handle the case of multiple
writers. This change also makes several code reductions possible.Less locking, less code - it's a Good Thing.
Signed-off-by: Paul Moore
Signed-off-by: James Morris
30 Jan, 2008
3 commits
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Now that the SELinux NetLabel "base SID" is always the netmsg initial SID we
can do a big optimization - caching the SID and not just the MLS attributes.
This not only saves a lot of per-packet memory allocations and copies but it
has a nice side effect of removing a chunk of code.Signed-off-by: Paul Moore
Signed-off-by: James Morris -
Rework the handling of network peer labels so that the different peer labeling
subsystems work better together. This includes moving both subsystems to a
single "peer" object class which involves not only changes to the permission
checks but an improved method of consolidating multiple packet peer labels.
As part of this work the inbound packet permission check code has been heavily
modified to handle both the old and new behavior in as sane a fashion as
possible.Signed-off-by: Paul Moore
Signed-off-by: James Morris -
In order to do any sort of IP header inspection of incoming packets we need to
know which address family, AF_INET/AF_INET6/etc., it belongs to and since the
sk_buff structure does not store this information we need to pass along the
address family separate from the packet itself.Signed-off-by: Paul Moore
Signed-off-by: James Morris
22 Jan, 2008
1 commit
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Fix a memory leak in security_netlbl_sid_to_secattr() as reported here:
* https://bugzilla.redhat.com/show_bug.cgi?id=352281Signed-off-by: Paul Moore
Signed-off-by: James Morris
02 Aug, 2007
1 commit
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A small fix to the SELinux/NetLabel glue code to ensure that the NetLabel
cache is utilized when possible. This was broken when the SELinux/NetLabel
glue code was reorganized in the last kernel release.Signed-off-by: Paul Moore
Acked-by: Stephen Smalley
Signed-off-by: James Morris
19 Jul, 2007
1 commit
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These changes will make NetLabel behave like labeled IPsec where there is an
access check for both labeled and unlabeled packets as well as providing the
ability to restrict domains to receiving only labeled packets when NetLabel is
in use. The changes to the policy are straight forward with the following
necessary to receive labeled traffic (with SECINITSID_NETMSG defined as
"netlabel_peer_t"):allow mydom_t netlabel_peer_t:{ tcp_socket udp_socket rawip_socket } recvfrom;
The policy for unlabeled traffic would be:
allow mydom_t unlabeled_t:{ tcp_socket udp_socket rawip_socket } recvfrom;
These policy changes, as well as more general NetLabel support, are included in
the latest SELinux Reference Policy release 20070629 or later. Users who make
use of NetLabel are strongly encouraged to upgrade their policy to avoid
network problems. Users who do not make use of NetLabel will not notice any
difference.Signed-off-by: Paul Moore
Signed-off-by: James Morris