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authorLinus Torvalds <torvalds@linux-foundation.org>2013-12-06 08:28:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-12-06 08:28:35 -0800
commit470abdcfda7d59e1ca1edc407a6bfd24193d3e40 (patch)
tree9b6a6f7dfbdcd3b291833a301fb36c8e7fa6b875
parent24cb412041456924a405221635cb5fb64c643903 (diff)
parentbfb26328b9e4141dafc714c512c079c11d7c1552 (diff)
downloadlinux-sh-470abdcfda7d59e1ca1edc407a6bfd24193d3e40.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull IMA fixes from James Morris: "Here are two more fixes for IMA" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: ima: properly free ima_template_entry structures ima: Do not free 'entry' before it is initialized
-rw-r--r--security/integrity/ima/ima.h1
-rw-r--r--security/integrity/ima/ima_api.c21
-rw-r--r--security/integrity/ima/ima_init.c3
3 files changed, 19 insertions, 6 deletions
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index 9636e17c9f5d..0356e1d437ca 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -148,6 +148,7 @@ int ima_alloc_init_template(struct integrity_iint_cache *iint,
int xattr_len, struct ima_template_entry **entry);
int ima_store_template(struct ima_template_entry *entry, int violation,
struct inode *inode, const unsigned char *filename);
+void ima_free_template_entry(struct ima_template_entry *entry);
const char *ima_d_path(struct path *path, char **pathbuf);
/* rbtree tree calls to lookup, insert, delete
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index 80374842fe0b..c38bbce8c6a6 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -22,6 +22,19 @@
#include "ima.h"
/*
+ * ima_free_template_entry - free an existing template entry
+ */
+void ima_free_template_entry(struct ima_template_entry *entry)
+{
+ int i;
+
+ for (i = 0; i < entry->template_desc->num_fields; i++)
+ kfree(entry->template_data[i].data);
+
+ kfree(entry);
+}
+
+/*
* ima_alloc_init_template - create and initialize a new template entry
*/
int ima_alloc_init_template(struct integrity_iint_cache *iint,
@@ -37,6 +50,7 @@ int ima_alloc_init_template(struct integrity_iint_cache *iint,
if (!*entry)
return -ENOMEM;
+ (*entry)->template_desc = template_desc;
for (i = 0; i < template_desc->num_fields; i++) {
struct ima_template_field *field = template_desc->fields[i];
u32 len;
@@ -51,10 +65,9 @@ int ima_alloc_init_template(struct integrity_iint_cache *iint,
(*entry)->template_data_len += sizeof(len);
(*entry)->template_data_len += len;
}
- (*entry)->template_desc = template_desc;
return 0;
out:
- kfree(*entry);
+ ima_free_template_entry(*entry);
*entry = NULL;
return result;
}
@@ -134,7 +147,7 @@ void ima_add_violation(struct file *file, const unsigned char *filename,
}
result = ima_store_template(entry, violation, inode, filename);
if (result < 0)
- kfree(entry);
+ ima_free_template_entry(entry);
err_out:
integrity_audit_msg(AUDIT_INTEGRITY_PCR, inode, filename,
op, cause, result, 0);
@@ -269,7 +282,7 @@ void ima_store_measurement(struct integrity_iint_cache *iint,
if (!result || result == -EEXIST)
iint->flags |= IMA_MEASURED;
if (result < 0)
- kfree(entry);
+ ima_free_template_entry(entry);
}
void ima_audit_measurement(struct integrity_iint_cache *iint,
diff --git a/security/integrity/ima/ima_init.c b/security/integrity/ima/ima_init.c
index 15f34bd40abe..37122768554a 100644
--- a/security/integrity/ima/ima_init.c
+++ b/security/integrity/ima/ima_init.c
@@ -63,7 +63,6 @@ static void __init ima_add_boot_aggregate(void)
result = ima_calc_boot_aggregate(&hash.hdr);
if (result < 0) {
audit_cause = "hashing_error";
- kfree(entry);
goto err_out;
}
}
@@ -76,7 +75,7 @@ static void __init ima_add_boot_aggregate(void)
result = ima_store_template(entry, violation, NULL,
boot_aggregate_name);
if (result < 0)
- kfree(entry);
+ ima_free_template_entry(entry);
return;
err_out:
integrity_audit_msg(AUDIT_INTEGRITY_PCR, NULL, boot_aggregate_name, op,