1 files changed, 25 insertions, 1 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 0c2ac318aa7f..e67a526d1f30 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3920,6 +3920,21 @@ static int selinux_task_getioprio(struct task_struct *p)
                             PROCESS__GETSCHED, NULL);
 }
 
+int selinux_task_prlimit(const struct cred *cred, const struct cred *tcred,
+                         unsigned int flags)
+{
+        u32 av = 0;
+
+        if (!flags)
+                return 0;
+        if (flags & LSM_PRLIMIT_WRITE)
+                av |= PROCESS__SETRLIMIT;
+        if (flags & LSM_PRLIMIT_READ)
+                av |= PROCESS__GETRLIMIT;
+        return avc_has_perm(cred_sid(cred), cred_sid(tcred),
+                            SECCLASS_PROCESS, av, NULL);
+}
+
 static int selinux_task_setrlimit(struct task_struct *p, unsigned int resource,
                 struct rlimit *new_rlim)
 {
@@ -4352,10 +4367,18 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
                 u32 sid, node_perm;
 
                 if (family == PF_INET) {
+                        if (addrlen < sizeof(struct sockaddr_in)) {
+                                err = -EINVAL;
+                                goto out;
+                        }
                         addr4 = (struct sockaddr_in *)address;
                         snum = ntohs(addr4->sin_port);
                         addrp = (char *)&addr4->sin_addr.s_addr;
                 } else {
+                        if (addrlen < SIN6_LEN_RFC2133) {
+                                err = -EINVAL;
+                                goto out;
+                        }
                         addr6 = (struct sockaddr_in6 *)address;
                         snum = ntohs(addr6->sin6_port);
                         addrp = (char *)&addr6->sin6_addr.s6_addr;
@@ -6108,7 +6131,7 @@ static int selinux_key_getsecurity(struct key *key, char **_buffer)
 
 #endif
 
-static struct security_hook_list selinux_hooks[] = {
+static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
         LSM_HOOK_INIT(binder_set_context_mgr, selinux_binder_set_context_mgr),
         LSM_HOOK_INIT(binder_transaction, selinux_binder_transaction),
         LSM_HOOK_INIT(binder_transfer_binder, selinux_binder_transfer_binder),
@@ -6206,6 +6229,7 @@ static struct security_hook_list selinux_hooks[] = {
         LSM_HOOK_INIT(task_setnice, selinux_task_setnice),
         LSM_HOOK_INIT(task_setioprio, selinux_task_setioprio),
         LSM_HOOK_INIT(task_getioprio, selinux_task_getioprio),
+        LSM_HOOK_INIT(task_prlimit, selinux_task_prlimit),
         LSM_HOOK_INIT(task_setrlimit, selinux_task_setrlimit),
         LSM_HOOK_INIT(task_setscheduler, selinux_task_setscheduler),
         LSM_HOOK_INIT(task_getscheduler, selinux_task_getscheduler),