Commit 62bc306e authored by Richard Guy Briggs's avatar Richard Guy Briggs Committed by Paul Moore

audit: log 32-bit socketcalls

32-bit socketcalls were not being logged by audit on x86_64 systems.
Log them.  This is basically a duplicate of the call from
net/socket.c:sys_socketcall(), but it addresses the impedance mismatch
between 32-bit userspace process and 64-bit kernel audit.

See: https://github.com/linux-audit/audit-kernel/issues/14Signed-off-by: default avatarRichard Guy Briggs <rgb@redhat.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarPaul Moore <paul@paul-moore.com>
parent 92c82e8a
......@@ -387,6 +387,20 @@ 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()))
......@@ -513,6 +527,12 @@ 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)
......
......@@ -22,6 +22,7 @@
#include <linux/filter.h>
#include <linux/compat.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/export.h>
#include <net/scm.h>
......@@ -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];
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment