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| author | Stephen Smalley <sds@tycho.nsa.gov> | 2019-12-13 15:28:38 -0500 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2019-12-18 21:26:06 -0500 |
| commit | 5c108d4e18f80be01965792726c81b105fbd677a (patch) | |
| tree | 5232e3ccd8383887072b4f8f3f7587e8ff237c99 /security/selinux/include | |
| parent | 6c5a682e6497cb1f7a67303ce098462a36bed362 (diff) | |
| download | linux-5c108d4e18f80be01965792726c81b105fbd677a.tar.bz2 | |
selinux: randomize layout of key structures
Randomize the layout of key selinux data structures.
Initially this is applied to the selinux_state, selinux_ss,
policydb, and task_security_struct data structures.
NB To test/use this mechanism, one must install the
necessary build-time dependencies, e.g. gcc-plugin-devel on Fedora,
and enable CONFIG_GCC_PLUGIN_RANDSTRUCT in the kernel configuration.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Reviewed-by: Kees Cook <keescook@chromium.org>
[PM: double semi-colon fixed]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/selinux/include')
| -rw-r--r-- | security/selinux/include/objsec.h | 2 | ||||
| -rw-r--r-- | security/selinux/include/security.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h index a4a86cbcfb0a..330b7b6d44e0 100644 --- a/security/selinux/include/objsec.h +++ b/security/selinux/include/objsec.h @@ -35,7 +35,7 @@ struct task_security_struct { u32 create_sid; /* fscreate SID */ u32 keycreate_sid; /* keycreate SID */ u32 sockcreate_sid; /* fscreate SID */ -}; +} __randomize_layout; enum label_initialized { LABEL_INVALID, /* invalid or not initialized */ diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index af623f03922c..ecdd610e6449 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -110,7 +110,7 @@ struct selinux_state { bool policycap[__POLICYDB_CAPABILITY_MAX]; struct selinux_avc *avc; struct selinux_ss *ss; -}; +} __randomize_layout; void selinux_ss_init(struct selinux_ss **ss); void selinux_avc_init(struct selinux_avc **avc); |