Jann Horn
e58f543fc7
apparmor: don't try to replace stale label in ptrace access check
...
[ Upstream commit 1f8266ff58840d698a1e96d2274189de1bdf7969 ]
As a comment above begin_current_label_crit_section() explains,
begin_current_label_crit_section() must run in sleepable context because
when label_is_stale() is true, aa_replace_current_label() runs, which uses
prepare_creds(), which can sleep.
Until now, the ptrace access check (which runs with a task lock held)
violated this rule.
Also add a might_sleep() assertion to begin_current_label_crit_section(),
because asserts are less likely to be ignored than comments.
Fixes: b2d09ae449 ("apparmor: move ptrace checks to using labels")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:49:55 +01:00
..
include
apparmor: don't try to replace stale label in ptrace access check
2020-01-27 14:49:55 +01:00
.gitignore
apparmor: add base infastructure for socket mediation
2018-03-13 17:25:48 -07:00
apparmorfs.c
apparmor: fix aa_xattrs_match() may sleep while holding a RCU lock
2020-01-09 10:19:02 +01:00
audit.c
apparmor: Fix memory leak of rule on error exit path
2018-06-07 01:50:48 -07:00
capability.c
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
crypto.c
apparmor: use SHASH_DESC_ON_STACK
2017-04-07 08:58:35 +10:00
domain.c
apparmor: fix aa_xattrs_match() may sleep while holding a RCU lock
2020-01-09 10:19:02 +01:00
file.c
apparmor: Check buffer bounds when mapping permissions mask
2018-07-19 16:24:43 -07:00
ipc.c
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
Kconfig
apparmor: add debug assert AA_BUG and Kconfig to control debug info
2017-01-16 01:18:24 -08:00
label.c
apparmor: fix unsigned len comparison with less than zero
2020-01-04 19:13:08 +01:00
lib.c
apparmor: Fix uninitialized value in aa_split_fqname
2018-11-27 16:13:00 +01:00
lsm.c
apparmor: don't try to replace stale label in ptrace access check
2020-01-27 14:49:55 +01:00
Makefile
apparmor: add base infastructure for socket mediation
2018-03-13 17:25:48 -07:00
match.c
apparmor: fix typo "traverse"
2018-05-03 00:50:12 -07:00
mount.c
apparmor: fix typo "independent"
2018-05-03 00:50:30 -07:00
net.c
apparmor: Fix network performance issue in aa_label_sk_perm
2020-01-27 14:49:54 +01:00
nulldfa.in
apparmor: cleanup add proper line wrapping to nulldfa.in
2018-02-09 11:30:01 -08:00
path.c
apparmor: Move path lookup to using preallocated buffers
2017-06-08 11:29:34 -07:00
policy.c
apparmor: fix aa_xattrs_match() may sleep while holding a RCU lock
2020-01-09 10:19:02 +01:00
policy_ns.c
apparmor: fix an error code in __aa_create_ns()
2018-08-21 16:24:56 -07:00
policy_unpack.c
apparmor: reset pos on failure to unpack for various functions
2019-09-16 08:22:16 +02:00
procattr.c
apparmor: move context.h to cred.h
2018-02-09 11:30:01 -08:00
resource.c
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
secid.c
apparmor: fix bad debug check in apparmor_secid_to_secctx()
2018-09-03 11:15:29 -07:00
stacksplitdfa.in
apparmor: use the dfa to do label parse string splitting
2018-02-09 11:30:01 -08:00
task.c
apparmor: update domain transitions that are subsets of confinement at nnp
2018-02-09 11:30:01 -08:00