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diff --git a/sys/kern/kern_xxx.c b/sys/kern/kern_xxx.c
--- a/sys/kern/kern_xxx.c
+++ b/sys/kern/kern_xxx.c
@@ -324,7 +324,9 @@
1, 0, 0, 0, 0);
if (error)
return (error);
- subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
+ error = subyte(uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
+ if (error)
+ return (EFAULT);
name[1] = KERN_HOSTNAME;
len = sizeof uap->name->nodename;
@@ -332,7 +334,9 @@
1, 0, 0, 0, 0);
if (error)
return (error);
- subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
+ error = subyte(uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
+ if (error)
+ return (EFAULT);
name[1] = KERN_OSRELEASE;
len = sizeof uap->name->release;
@@ -340,7 +344,9 @@
1, 0, 0, 0, 0);
if (error)
return (error);
- subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
+ error = subyte(uap->name->release + sizeof(uap->name->release) - 1, 0);
+ if (error)
+ return (EFAULT);
/*
name = KERN_VERSION;
@@ -373,7 +379,9 @@
1, 0, 0, 0, 0);
if (error)
return (error);
- subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
+ error = subyte(uap->name->machine + sizeof(uap->name->machine) - 1, 0);
+ if (error)
+ return (EFAULT);
return (0);
}

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