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authorMimi Zohar <zohar@linux.vnet.ibm.com>2015-04-21 16:54:24 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-08-03 09:29:12 -0700
commit0ecc8ea6de19f41bf1332ef9dd472412b9ce4fa3 (patch)
treec865f60dd12d1f943143e31e4d0835acf39e57cd
parent7869fa6047fe7c5076e70b57a83fb351b42c34c6 (diff)
ima: do not measure or appraise the NSFS filesystem
commit cd025f7f94108995383edddfb61fc8afea6c66a9 upstream. Include don't appraise or measure rules for the NSFS filesystem in the builtin ima_tcb and ima_appraise_tcb policies. Changelog: - Update documentation Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--Documentation/ABI/testing/ima_policy3
-rw-r--r--security/integrity/ima/ima_policy.c2
2 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/ima_policy b/Documentation/ABI/testing/ima_policy
index 232e174aa5de..8ae3f57090d4 100644
--- a/Documentation/ABI/testing/ima_policy
+++ b/Documentation/ABI/testing/ima_policy
@@ -65,6 +65,9 @@ Description:
# CGROUP_SUPER_MAGIC
dont_measure fsmagic=0x27e0eb
dont_appraise fsmagic=0x27e0eb
+ # NSFS_MAGIC
+ dont_measure fsmagic=0x6e736673
+ dont_appraise fsmagic=0x6e736673
measure func=BPRM_CHECK
measure func=FILE_MMAP mask=MAY_EXEC
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index e4244fc43cf1..f2421f7fa3c8 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -81,6 +81,7 @@ static struct ima_rule_entry default_rules[] = {
{.action = DONT_MEASURE, .fsmagic = SELINUX_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_MEASURE, .fsmagic = CGROUP_SUPER_MAGIC,
.flags = IMA_FSMAGIC},
+ {.action = DONT_MEASURE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = MEASURE, .func = MMAP_CHECK, .mask = MAY_EXEC,
.flags = IMA_FUNC | IMA_MASK},
{.action = MEASURE, .func = BPRM_CHECK, .mask = MAY_EXEC,
@@ -101,6 +102,7 @@ static struct ima_rule_entry default_appraise_rules[] = {
{.action = DONT_APPRAISE, .fsmagic = BINFMTFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_APPRAISE, .fsmagic = SECURITYFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_APPRAISE, .fsmagic = SELINUX_MAGIC, .flags = IMA_FSMAGIC},
+ {.action = DONT_APPRAISE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_APPRAISE, .fsmagic = CGROUP_SUPER_MAGIC, .flags = IMA_FSMAGIC},
#ifndef CONFIG_IMA_APPRAISE_SIGNED_INIT
{.action = APPRAISE, .fowner = GLOBAL_ROOT_UID, .flags = IMA_FOWNER},