| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.1 176/267] ima: do not measure or appraise the NSFS filesystem | Date | Fri, 31 Jul 2015 12:40:27 -0700 |
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4.1-stable review patch. If anyone has any objections, please let me know.
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From: Mimi Zohar <zohar@linux.vnet.ibm.com>
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>
--- Documentation/ABI/testing/ima_policy | 3 +++ security/integrity/ima/ima_policy.c | 2 ++ 2 files changed, 5 insertions(+)
--- 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 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -81,6 +81,7 @@ static struct ima_rule_entry default_rul {.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_app {.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},
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