BMC/Intel-BMC/linux.git/security/apparmor/lsm.c, branch dev-5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17+00:00

Based on 1 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 version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman

apparmor: Restore Y/N in /sys for apparmor's "enabled"

2019-04-10T11:24:48+00:00

Before commit c5459b829b71 ("LSM: Plumb visibility into optional "enabled" state"), /sys/module/apparmor/parameters/enabled would show "Y" or "N" since it was using the "bool" handler. After being changed to "int", this switched to "1" or "0", breaking the userspace AppArmor detection of dbus-broker. This restores the Y/N output while keeping the LSM infrastructure happy. Before: $ cat /sys/module/apparmor/parameters/enabled 1 After: $ cat /sys/module/apparmor/parameters/enabled Y Reported-by: David Rheinsberg Reviewed-by: David Rheinsberg Link: https://lkml.kernel.org/r/CADyDSO6k8vYb1eryT4g6+EHrLCvb68GAbHVWuULkYjcZcYNhhw@mail.gmail.com Fixes: c5459b829b71 ("LSM: Plumb visibility into optional "enabled" state") Signed-off-by: Kees Cook Signed-off-by: John Johansen

Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2019-03-07T19:44:01+00:00

Pull security subsystem updates from James Morris: - Extend LSM stacking to allow sharing of cred, file, ipc, inode, and task blobs. This paves the way for more full-featured LSMs to be merged, and is specifically aimed at LandLock and SARA LSMs. This work is from Casey and Kees. - There's a new LSM from Micah Morton: "SafeSetID gates the setid family of syscalls to restrict UID/GID transitions from a given UID/GID to only those approved by a system-wide whitelist." This feature is currently shipping in ChromeOS. * 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (62 commits) keys: fix missing __user in KEYCTL_PKEY_QUERY LSM: Update list of SECURITYFS users in Kconfig LSM: Ignore "security=" when "lsm=" is specified LSM: Update function documentation for cap_capable security: mark expected switch fall-throughs and add a missing break tomoyo: Bump version. LSM: fix return value check in safesetid_init_securityfs() LSM: SafeSetID: add selftest LSM: SafeSetID: remove unused include LSM: SafeSetID: 'depend' on CONFIG_SECURITY LSM: Add 'name' field for SafeSetID in DEFINE_LSM LSM: add SafeSetID module that gates setid calls LSM: add SafeSetID module that gates setid calls tomoyo: Allow multiple use_group lines. tomoyo: Coding style fix. tomoyo: Swicth from cred->security to task_struct->security. security: keys: annotate implicit fall throughs security: keys: annotate implicit fall throughs security: keys: annotate implicit fall through capabilities:: annotate implicit fall through ...

apparmor: Fix warning about unused function apparmor_ipv6_postroute

2019-02-01T12:12:57+00:00

when compiled without CONFIG_IPV6: security/apparmor/lsm.c:1601:21: warning: ‘apparmor_ipv6_postroute’ defined but not used [-Wunused-function] static unsigned int apparmor_ipv6_postroute(void *priv, ^~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Jordan Glover Tested-by: Jordan Glover Signed-off-by: Petr Vorel Signed-off-by: John Johansen

LSM: Make lsm_early_cred() and lsm_early_task() local functions.

2019-01-18T19:44:02+00:00

Since current->cred == current->real_cred when ordered_lsm_init() is called, and lsm_early_cred()/lsm_early_task() need to be called between the amount of required bytes is determined and module specific initialization function is called, we can move these calls from individual modules to ordered_lsm_init(). Signed-off-by: Tetsuo Handa Acked-by: Casey Schaufler Signed-off-by: James Morris

LSM: generalize flag passing to security_capable

2019-01-10T22:16:06+00:00

This patch provides a general mechanism for passing flags to the security_capable LSM hook. It replaces the specific 'audit' flag that is used to tell security_capable whether it should log an audit message for the given capability check. The reason for generalizing this flag passing is so we can add an additional flag that signifies whether security_capable is being called by a setid syscall (which is needed by the proposed SafeSetID LSM). Signed-off-by: Micah Morton Reviewed-by: Kees Cook Signed-off-by: James Morris

LSM: Infrastructure management of the task security

2019-01-08T21:18:45+00:00

Move management of the task_struct->security blob out of the individual security modules and into the security infrastructure. Instead of allocating the blobs from within the modules the modules tell the infrastructure how much space is required, and the space is allocated there. The only user of this blob is AppArmor. The AppArmor use is abstracted to avoid future conflict. Signed-off-by: Casey Schaufler Reviewed-by: Kees Cook [kees: adjusted for ordered init series] Signed-off-by: Kees Cook

LSM: Infrastructure management of the file security

2019-01-08T21:18:44+00:00

Move management of the file->f_security blob out of the individual security modules and into the infrastructure. The modules no longer allocate or free the data, instead they tell the infrastructure how much space they require. Signed-off-by: Casey Schaufler Reviewed-by: Kees Cook [kees: adjusted for ordered init series] Signed-off-by: Kees Cook

Infrastructure management of the cred security blob

2019-01-08T21:18:44+00:00

Move management of the cred security blob out of the security modules and into the security infrastructre. Instead of allocating and freeing space the security modules tell the infrastructure how much space they require. Signed-off-by: Casey Schaufler Reviewed-by: Kees Cook [kees: adjusted for ordered init series] Signed-off-by: Kees Cook

AppArmor: Abstract use of cred security blob

2019-01-08T21:18:44+00:00

Don't use the cred->security pointer directly. Provide a helper function that provides the security blob pointer. Signed-off-by: Casey Schaufler Reviewed-by: Kees Cook [kees: adjusted for ordered init series] Signed-off-by: Kees Cook