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D13267.1794673196.diff
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D13267.1794673196.diff
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Index: kern/vfs_extattr.c
===================================================================
--- kern/vfs_extattr.c
+++ kern/vfs_extattr.c
@@ -227,6 +227,9 @@
cap_rights_t rights;
int error;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@@ -269,6 +272,9 @@
char *data;
int error;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
if (error)
@@ -312,6 +318,9 @@
char *data;
int error;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
if (error)
@@ -432,6 +441,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
@@ -476,6 +488,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
if (error)
@@ -520,6 +535,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
if (error)
@@ -770,6 +788,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_FD(uap->fd);
AUDIT_ARG_VALUE(uap->attrnamespace);
error = getvnode(td, uap->fd,
@@ -807,6 +828,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
NDINIT(&nd, LOOKUP, FOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path, td);
error = namei(&nd);
@@ -844,6 +868,9 @@
data = NULL;
+ if (uap->nbytes > IOSIZE_MAX)
+ return (EINVAL);
+
AUDIT_ARG_VALUE(uap->attrnamespace);
NDINIT(&nd, LOOKUP, NOFOLLOW | AUDITVNODE1, UIO_USERSPACE, uap->path,
td);

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