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-rw-r--r--security/selinux/ss/policydb.c51
1 files changed, 36 insertions, 15 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index f4eadd3f7350..b63ef865ce1e 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -2108,6 +2108,7 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
{
int i, j, rc;
u32 nel, len;
+ __be64 prefixbuf[1];
__le32 buf[3];
struct ocontext *l, *c;
u32 nodebuf[8];
@@ -2217,21 +2218,30 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
goto out;
break;
}
- case OCON_IBPKEY:
- rc = next_entry(nodebuf, fp, sizeof(u32) * 4);
+ case OCON_IBPKEY: {
+ u32 pkey_lo, pkey_hi;
+
+ rc = next_entry(prefixbuf, fp, sizeof(u64));
+ if (rc)
+ goto out;
+
+ /* we need to have subnet_prefix in CPU order */
+ c->u.ibpkey.subnet_prefix = be64_to_cpu(prefixbuf[0]);
+
+ rc = next_entry(buf, fp, sizeof(u32) * 2);
if (rc)
goto out;
- c->u.ibpkey.subnet_prefix = be64_to_cpu(*((__be64 *)nodebuf));
+ pkey_lo = le32_to_cpu(buf[0]);
+ pkey_hi = le32_to_cpu(buf[1]);
- if (nodebuf[2] > 0xffff ||
- nodebuf[3] > 0xffff) {
+ if (pkey_lo > U16_MAX || pkey_hi > U16_MAX) {
rc = -EINVAL;
goto out;
}
- c->u.ibpkey.low_pkey = le32_to_cpu(nodebuf[2]);
- c->u.ibpkey.high_pkey = le32_to_cpu(nodebuf[3]);
+ c->u.ibpkey.low_pkey = pkey_lo;
+ c->u.ibpkey.high_pkey = pkey_hi;
rc = context_read_and_validate(&c->context[0],
p,
@@ -2239,7 +2249,10 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
if (rc)
goto out;
break;
- case OCON_IBENDPORT:
+ }
+ case OCON_IBENDPORT: {
+ u32 port;
+
rc = next_entry(buf, fp, sizeof(u32) * 2);
if (rc)
goto out;
@@ -2249,12 +2262,13 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
if (rc)
goto out;
- if (buf[1] > 0xff || buf[1] == 0) {
+ port = le32_to_cpu(buf[1]);
+ if (port > U8_MAX || port == 0) {
rc = -EINVAL;
goto out;
}
- c->u.ibendport.port = le32_to_cpu(buf[1]);
+ c->u.ibendport.port = port;
rc = context_read_and_validate(&c->context[0],
p,
@@ -2262,7 +2276,8 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
if (rc)
goto out;
break;
- }
+ } /* end case */
+ } /* end switch */
}
}
rc = 0;
@@ -3105,6 +3120,7 @@ static int ocontext_write(struct policydb *p, struct policydb_compat_info *info,
{
unsigned int i, j, rc;
size_t nel, len;
+ __be64 prefixbuf[1];
__le32 buf[3];
u32 nodebuf[8];
struct ocontext *c;
@@ -3192,12 +3208,17 @@ static int ocontext_write(struct policydb *p, struct policydb_compat_info *info,
return rc;
break;
case OCON_IBPKEY:
- *((__be64 *)nodebuf) = cpu_to_be64(c->u.ibpkey.subnet_prefix);
+ /* subnet_prefix is in CPU order */
+ prefixbuf[0] = cpu_to_be64(c->u.ibpkey.subnet_prefix);
- nodebuf[2] = cpu_to_le32(c->u.ibpkey.low_pkey);
- nodebuf[3] = cpu_to_le32(c->u.ibpkey.high_pkey);
+ rc = put_entry(prefixbuf, sizeof(u64), 1, fp);
+ if (rc)
+ return rc;
+
+ buf[0] = cpu_to_le32(c->u.ibpkey.low_pkey);
+ buf[1] = cpu_to_le32(c->u.ibpkey.high_pkey);
- rc = put_entry(nodebuf, sizeof(u32), 4, fp);
+ rc = put_entry(buf, sizeof(u32), 2, fp);
if (rc)
return rc;
rc = context_write(p, &c->context[0], fp);