Date: Sun, 19 Sep 2004 15:04:59 +0200 From: gerarra@tin.it To: freebsd-hackers@freebsd.org Subject: kernel buff overflow Message-ID: <4146316C0000AD08@ims3a.cp.tin.it>
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Maybe you would appreciate more something like that:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> cat kern_syscalls.diff
--- kern_syscalls.c Sat Sep 18 13:42:21 2004
+++ kern_syscalls2.c Sun Sep 19 14:59:27 2004
@@ -58,6 +58,12 @@
syscall_register(int *offset, struct sysent *new_sysent,
struct sysent *old_sysent)
{
+
+#ifdef __i386__
+ if (new_sysent->sy_narg < 0 || new_sysent->sy_narg > i386_SYS_AR=
GS)
+ return E2BIG;
+#endif
+
if (*offset =3D=3D NO_SYSCALL) {
int i;
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