kernel/linux.git/security/selinux/include/objsec.h, branch v6.12.101

selinux: fix overlayfs mmap() and mprotect() access checks

2026-07-04T11:43:31+00:00

[ Upstream commit 82544d36b1729153c8aeb179e84750f0c085d3b1 ] The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file (the "user" file) and the mounter's credentials are sufficient to access the lower level file (the "backing" file). Unfortunately, the current code does not properly enforce these access controls for both mmap() and mprotect() operations on overlayfs filesystems. This patch makes use of the newly created security_mmap_backing_file() LSM hook to provide the missing backing file enforcement for mmap() operations, and leverages the backing file API and new LSM blob to provide the necessary information to properly enforce the mprotect() access controls. Cc: stable@vger.kernel.org Acked-by: Amir Goldstein Signed-off-by: Paul Moore Signed-off-by: Cai Xinchen Signed-off-by: Sasha Levin

lsm: infrastructure management of the perf_event security blob

2024-07-29T20:54:52+00:00

Move management of the perf_event->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. There are no longer any modules that require the perf_event_free() hook. The hook definition has been removed. Signed-off-by: Casey Schaufler Reviewed-by: John Johansen [PM: subject tweak] Signed-off-by: Paul Moore

lsm: infrastructure management of the infiniband blob

2024-07-29T20:54:52+00:00

Move management of the infiniband security blob out of the individual security modules and into the LSM infrastructure. The security modules tell the infrastructure how much space they require at initialization. There are no longer any modules that require the ib_free() hook. The hook definition has been removed. Signed-off-by: Casey Schaufler Reviewed-by: John Johansen [PM: subject tweak, selinux style fixes] Signed-off-by: Paul Moore

lsm: infrastructure management of the dev_tun blob

2024-07-29T20:54:51+00:00

Move management of the dev_tun security blob out of the individual security modules and into the LSM infrastructure. The security modules tell the infrastructure how much space they require at initialization. There are no longer any modules that require the dev_tun_free hook. The hook definition has been removed. Signed-off-by: Casey Schaufler Reviewed-by: John Johansen [PM: subject tweak, selinux style fixes] Signed-off-by: Paul Moore

lsm: infrastructure management of the key security blob

2024-07-29T20:54:51+00:00

Move management of the key->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. There are no existing modules that require a key_free hook, so the call to it and the definition for it have been removed. Signed-off-by: Casey Schaufler Reviewed-by: John Johansen [PM: subject tweak] Signed-off-by: Paul Moore

lsm: infrastructure management of the sock security

2024-07-29T20:54:50+00:00

Move management of the sock->sk_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. Acked-by: Paul Moore Reviewed-by: Kees Cook Reviewed-by: John Johansen Acked-by: Stephen Smalley Signed-off-by: Casey Schaufler [PM: subject tweak] Signed-off-by: Paul Moore

selinux: fix style issues in security/selinux/include/objsec.h

2023-12-22T23:09:29+00:00

As part of on ongoing effort to perform more automated testing and provide more tools for individual developers to validate their patches before submitting, we are trying to make our code "clang-format clean". My hope is that once we have fixed all of our style "quirks", developers will be able to run clang-format on their patches to help avoid silly formatting problems and ensure their changes fit in well with the rest of the SELinux kernel code. Signed-off-by: Paul Moore

selinux: update my email address

2023-07-19T15:27:02+00:00

Update my email address; MAINTAINERS was updated some time ago. Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore

selinux: de-brand SELinux

2023-07-18T22:42:57+00:00

Change "NSA SELinux" to just "SELinux" in Kconfig help text and comments. While NSA was the original primary developer and continues to help maintain SELinux, SELinux has long since transitioned to a wide community of developers and maintainers. SELinux has been part of the mainline Linux kernel for nearly 20 years now [1] and has received contributions from many individuals and organizations. [1] https://lore.kernel.org/lkml/Pine.LNX.4.44.0308082228470.1852-100000@home.osdl.org/ Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore

LSM: Infrastructure management of the superblock

2021-04-22T19:22:10+00:00

Move management of the superblock->sb_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. Cc: John Johansen Signed-off-by: Casey Schaufler Signed-off-by: Mickaël Salaün Reviewed-by: Stephen Smalley Acked-by: Serge Hallyn Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20210422154123.13086-6-mic@digikod.net Signed-off-by: James Morris