diff --git a/include/linux/audit.h b/include/linux/audit.h index f51fca8d0b6f..504e784b7ffa 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -360,6 +360,7 @@ extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm, const struct cred *old); extern void __audit_log_capset(const struct cred *new, const struct cred *old); extern void __audit_mmap_fd(int fd, int flags); +extern void __audit_log_kern_module(char *name); static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp) { @@ -387,6 +388,20 @@ static inline int audit_socketcall(int nargs, unsigned long *args) return __audit_socketcall(nargs, args); return 0; } + +static inline int audit_socketcall_compat(int nargs, u32 *args) +{ + unsigned long a[AUDITSC_ARGS]; + int i; + + if (audit_dummy_context()) + return 0; + + for (i = 0; i < nargs; i++) + a[i] = (unsigned long)args[i]; + return __audit_socketcall(nargs, a); +} + static inline int audit_sockaddr(int len, void *addr) { if (unlikely(!audit_dummy_context())) @@ -436,6 +451,12 @@ static inline void audit_mmap_fd(int fd, int flags) __audit_mmap_fd(fd, flags); } +static inline void audit_log_kern_module(char *name) +{ + if (!audit_dummy_context()) + __audit_log_kern_module(name); +} + extern int audit_n_rules; extern int audit_signals; #else /* CONFIG_AUDITSYSCALL */ @@ -513,6 +534,12 @@ static inline int audit_socketcall(int nargs, unsigned long *args) { return 0; } + +static inline int audit_socketcall_compat(int nargs, u32 *args) +{ + return 0; +} + static inline void audit_fd_pair(int fd1, int fd2) { } static inline int audit_sockaddr(int len, void *addr) @@ -541,6 +568,11 @@ static inline void audit_log_capset(const struct cred *new, { } static inline void audit_mmap_fd(int fd, int flags) { } + +static inline void audit_log_kern_module(char *name) +{ +} + static inline void audit_ptrace(struct task_struct *t) { } #define audit_n_rules 0 diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index 1c107cb1c83f..0714a66f0e0c 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -111,6 +111,7 @@ #define AUDIT_PROCTITLE 1327 /* Proctitle emit event */ #define AUDIT_FEATURE_CHANGE 1328 /* audit log listing feature changes */ #define AUDIT_REPLACE 1329 /* Replace auditd if this packet unanswerd */ +#define AUDIT_KERN_MODULE 1330 /* Kernel Module events */ #define AUDIT_AVC 1400 /* SE Linux avc denial or grant */ #define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */ @@ -326,17 +327,21 @@ enum { #define AUDIT_STATUS_RATE_LIMIT 0x0008 #define AUDIT_STATUS_BACKLOG_LIMIT 0x0010 #define AUDIT_STATUS_BACKLOG_WAIT_TIME 0x0020 +#define AUDIT_STATUS_LOST 0x0040 #define AUDIT_FEATURE_BITMAP_BACKLOG_LIMIT 0x00000001 #define AUDIT_FEATURE_BITMAP_BACKLOG_WAIT_TIME 0x00000002 #define AUDIT_FEATURE_BITMAP_EXECUTABLE_PATH 0x00000004 #define AUDIT_FEATURE_BITMAP_EXCLUDE_EXTEND 0x00000008 #define AUDIT_FEATURE_BITMAP_SESSIONID_FILTER 0x00000010 +#define AUDIT_FEATURE_BITMAP_LOST_RESET 0x00000020 + #define AUDIT_FEATURE_BITMAP_ALL (AUDIT_FEATURE_BITMAP_BACKLOG_LIMIT | \ AUDIT_FEATURE_BITMAP_BACKLOG_WAIT_TIME | \ AUDIT_FEATURE_BITMAP_EXECUTABLE_PATH | \ AUDIT_FEATURE_BITMAP_EXCLUDE_EXTEND | \ - AUDIT_FEATURE_BITMAP_SESSIONID_FILTER) + AUDIT_FEATURE_BITMAP_SESSIONID_FILTER | \ + AUDIT_FEATURE_BITMAP_LOST_RESET) /* deprecated: AUDIT_VERSION_* */ #define AUDIT_VERSION_LATEST AUDIT_FEATURE_BITMAP_ALL diff --git a/kernel/audit.c b/kernel/audit.c index 6e399bb69d7c..e794544f5e63 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -121,7 +121,7 @@ u32 audit_sig_sid = 0; 3) suppressed due to audit_rate_limit 4) suppressed due to audit_backlog_limit */ -static atomic_t audit_lost = ATOMIC_INIT(0); +static atomic_t audit_lost = ATOMIC_INIT(0); /* The netlink socket. */ static struct sock *audit_sock; @@ -1058,6 +1058,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) if (err < 0) return err; } + if (s.mask == AUDIT_STATUS_LOST) { + u32 lost = atomic_xchg(&audit_lost, 0); + + audit_log_config_change("lost", 0, lost, 1); + return lost; + } break; } case AUDIT_GET_FEATURE: @@ -1349,7 +1355,9 @@ static int __init audit_init(void) panic("audit: failed to start the kauditd thread (%d)\n", err); } - audit_log(NULL, GFP_KERNEL, AUDIT_KERNEL, "initialized"); + audit_log(NULL, GFP_KERNEL, AUDIT_KERNEL, + "state=initialized audit_enabled=%u res=1", + audit_enabled); return 0; } diff --git a/kernel/audit.h b/kernel/audit.h index 960d49c9db5e..ca579880303a 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -199,6 +199,9 @@ struct audit_context { struct { int argc; } execve; + struct { + char *name; + } module; }; int fds[2]; struct audit_proctitle proctitle; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index cf1fa43512c1..d6a8de5f8fa3 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1221,7 +1221,7 @@ static void show_special(struct audit_context *context, int *call_panic) context->ipc.perm_mode); } break; } - case AUDIT_MQ_OPEN: { + case AUDIT_MQ_OPEN: audit_log_format(ab, "oflag=0x%x mode=%#ho mq_flags=0x%lx mq_maxmsg=%ld " "mq_msgsize=%ld mq_curmsgs=%ld", @@ -1230,8 +1230,8 @@ static void show_special(struct audit_context *context, int *call_panic) context->mq_open.attr.mq_maxmsg, context->mq_open.attr.mq_msgsize, context->mq_open.attr.mq_curmsgs); - break; } - case AUDIT_MQ_SENDRECV: { + break; + case AUDIT_MQ_SENDRECV: audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " "abs_timeout_sec=%ld abs_timeout_nsec=%ld", @@ -1240,12 +1240,12 @@ static void show_special(struct audit_context *context, int *call_panic) context->mq_sendrecv.msg_prio, context->mq_sendrecv.abs_timeout.tv_sec, context->mq_sendrecv.abs_timeout.tv_nsec); - break; } - case AUDIT_MQ_NOTIFY: { + break; + case AUDIT_MQ_NOTIFY: audit_log_format(ab, "mqdes=%d sigev_signo=%d", context->mq_notify.mqdes, context->mq_notify.sigev_signo); - break; } + break; case AUDIT_MQ_GETSETATTR: { struct mq_attr *attr = &context->mq_getsetattr.mqstat; audit_log_format(ab, @@ -1255,19 +1255,24 @@ static void show_special(struct audit_context *context, int *call_panic) attr->mq_flags, attr->mq_maxmsg, attr->mq_msgsize, attr->mq_curmsgs); break; } - case AUDIT_CAPSET: { + case AUDIT_CAPSET: audit_log_format(ab, "pid=%d", context->capset.pid); audit_log_cap(ab, "cap_pi", &context->capset.cap.inheritable); audit_log_cap(ab, "cap_pp", &context->capset.cap.permitted); audit_log_cap(ab, "cap_pe", &context->capset.cap.effective); - break; } - case AUDIT_MMAP: { + break; + case AUDIT_MMAP: audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); - break; } - case AUDIT_EXECVE: { + break; + case AUDIT_EXECVE: audit_log_execve_info(context, &ab); - break; } + break; + case AUDIT_KERN_MODULE: + audit_log_format(ab, "name="); + audit_log_untrustedstring(ab, context->module.name); + kfree(context->module.name); + break; } audit_log_end(ab); } @@ -2368,6 +2373,15 @@ void __audit_mmap_fd(int fd, int flags) context->type = AUDIT_MMAP; } +void __audit_log_kern_module(char *name) +{ + struct audit_context *context = current->audit_context; + + context->module.name = kmalloc(strlen(name) + 1, GFP_KERNEL); + strcpy(context->module.name, name); + context->type = AUDIT_KERN_MODULE; +} + static void audit_log_task(struct audit_buffer *ab) { kuid_t auid, uid; @@ -2411,7 +2425,7 @@ void audit_core_dumps(long signr) if (unlikely(!ab)) return; audit_log_task(ab); - audit_log_format(ab, " sig=%ld", signr); + audit_log_format(ab, " sig=%ld res=1", signr); audit_log_end(ab); } diff --git a/kernel/module.c b/kernel/module.c index 3d8f126208e3..e2eec4b47143 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -61,6 +61,7 @@ #include #include #include +#include #include #include "module-internal.h" @@ -3608,6 +3609,8 @@ static int load_module(struct load_info *info, const char __user *uargs, goto free_copy; } + audit_log_kern_module(mod->name); + /* Reserve our place in the list. */ err = add_unformed_module(mod); if (err) @@ -3696,7 +3699,7 @@ static int load_module(struct load_info *info, const char __user *uargs, mod->name, after_dashes); } - /* Link in to syfs. */ + /* Link in to sysfs. */ err = mod_sysfs_setup(mod, info, mod->kp, mod->num_kp); if (err < 0) goto coming_cleanup; diff --git a/net/compat.c b/net/compat.c index 96c544b05b15..d69f539ca0bc 100644 --- a/net/compat.c +++ b/net/compat.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -781,14 +782,24 @@ COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) { - int ret; - u32 a[6]; + u32 a[AUDITSC_ARGS]; + unsigned int len; u32 a0, a1; + int ret; if (call < SYS_SOCKET || call > SYS_SENDMMSG) return -EINVAL; - if (copy_from_user(a, args, nas[call])) + len = nas[call]; + if (len > sizeof(a)) + return -EINVAL; + + if (copy_from_user(a, args, len)) return -EFAULT; + + ret = audit_socketcall_compat(len / sizeof(a[0]), a); + if (ret) + return ret; + a0 = a[0]; a1 = a[1];