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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-30 02:38:46 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-30 02:38:46 +0200 |
commit | 7a1e8b80fb1e8ead4cec15d1fc494ed290e4d2e9 (patch) | |
tree | 55a36d4256f1ae793b5c8e88c0f158737447193f /security/selinux/ss | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebi... (diff) | |
parent | apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling (diff) | |
download | linux-7a1e8b80fb1e8ead4cec15d1fc494ed290e4d2e9.tar.xz linux-7a1e8b80fb1e8ead4cec15d1fc494ed290e4d2e9.zip |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Highlights:
- TPM core and driver updates/fixes
- IPv6 security labeling (CALIPSO)
- Lots of Apparmor fixes
- Seccomp: remove 2-phase API, close hole where ptrace can change
syscall #"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits)
apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)
tpm: Factor out common startup code
tpm: use devm_add_action_or_reset
tpm2_i2c_nuvoton: add irq validity check
tpm: read burstcount from TPM_STS in one 32-bit transaction
tpm: fix byte-order for the value read by tpm2_get_tpm_pt
tpm_tis_core: convert max timeouts from msec to jiffies
apparmor: fix arg_size computation for when setprocattr is null terminated
apparmor: fix oops, validate buffer size in apparmor_setprocattr()
apparmor: do not expose kernel stack
apparmor: fix module parameters can be changed after policy is locked
apparmor: fix oops in profile_unpack() when policy_db is not present
apparmor: don't check for vmalloc_addr if kvzalloc() failed
apparmor: add missing id bounds check on dfa verification
apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task
apparmor: use list_next_entry instead of list_entry_next
apparmor: fix refcount race when finding a child profile
apparmor: fix ref count leak when profile sha1 hash is read
apparmor: check that xindex is in trans_table bounds
...
Diffstat (limited to 'security/selinux/ss')
-rw-r--r-- | security/selinux/ss/ebitmap.c | 2 | ||||
-rw-r--r-- | security/selinux/ss/services.c | 70 |
2 files changed, 23 insertions, 49 deletions
diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c index 57644b1dc42e..894b6cdc11c5 100644 --- a/security/selinux/ss/ebitmap.c +++ b/security/selinux/ss/ebitmap.c @@ -165,7 +165,7 @@ int ebitmap_netlbl_import(struct ebitmap *ebmap, e_iter = kzalloc(sizeof(*e_iter), GFP_ATOMIC); if (e_iter == NULL) goto netlbl_import_failure; - e_iter->startbit = offset & ~(EBITMAP_SIZE - 1); + e_iter->startbit = offset - (offset % EBITMAP_SIZE); if (e_prev == NULL) ebmap->node = e_iter; else diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 89df64672b89..082b20c78363 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -543,7 +543,7 @@ static void type_attribute_bounds_av(struct context *scontext, struct av_decision *avd) { struct context lo_scontext; - struct context lo_tcontext; + struct context lo_tcontext, *tcontextp = tcontext; struct av_decision lo_avd; struct type_datum *source; struct type_datum *target; @@ -553,67 +553,41 @@ static void type_attribute_bounds_av(struct context *scontext, scontext->type - 1); BUG_ON(!source); + if (!source->bounds) + return; + target = flex_array_get_ptr(policydb.type_val_to_struct_array, tcontext->type - 1); BUG_ON(!target); - if (source->bounds) { - memset(&lo_avd, 0, sizeof(lo_avd)); - - memcpy(&lo_scontext, scontext, sizeof(lo_scontext)); - lo_scontext.type = source->bounds; + memset(&lo_avd, 0, sizeof(lo_avd)); - context_struct_compute_av(&lo_scontext, - tcontext, - tclass, - &lo_avd, - NULL); - if ((lo_avd.allowed & avd->allowed) == avd->allowed) - return; /* no masked permission */ - masked = ~lo_avd.allowed & avd->allowed; - } + memcpy(&lo_scontext, scontext, sizeof(lo_scontext)); + lo_scontext.type = source->bounds; if (target->bounds) { - memset(&lo_avd, 0, sizeof(lo_avd)); - memcpy(&lo_tcontext, tcontext, sizeof(lo_tcontext)); lo_tcontext.type = target->bounds; - - context_struct_compute_av(scontext, - &lo_tcontext, - tclass, - &lo_avd, - NULL); - if ((lo_avd.allowed & avd->allowed) == avd->allowed) - return; /* no masked permission */ - masked = ~lo_avd.allowed & avd->allowed; + tcontextp = &lo_tcontext; } - if (source->bounds && target->bounds) { - memset(&lo_avd, 0, sizeof(lo_avd)); - /* - * lo_scontext and lo_tcontext are already - * set up. - */ + context_struct_compute_av(&lo_scontext, + tcontextp, + tclass, + &lo_avd, + NULL); - context_struct_compute_av(&lo_scontext, - &lo_tcontext, - tclass, - &lo_avd, - NULL); - if ((lo_avd.allowed & avd->allowed) == avd->allowed) - return; /* no masked permission */ - masked = ~lo_avd.allowed & avd->allowed; - } + masked = ~lo_avd.allowed & avd->allowed; - if (masked) { - /* mask violated permissions */ - avd->allowed &= ~masked; + if (likely(!masked)) + return; /* no masked permission */ - /* audit masked permissions */ - security_dump_masked_av(scontext, tcontext, - tclass, masked, "bounds"); - } + /* mask violated permissions */ + avd->allowed &= ~masked; + + /* audit masked permissions */ + security_dump_masked_av(scontext, tcontext, + tclass, masked, "bounds"); } /* |