diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 26 |
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), |