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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[deliverable/linux.git]
/
fs
/
autofs4
/
dev-ioctl.c
diff --git
a/fs/autofs4/dev-ioctl.c
b/fs/autofs4/dev-ioctl.c
index 3182c0e68b4204cb2aec089b5d960b7053534757..232e03d4780d1b51386e72ab8df7e65af279e8ff 100644
(file)
--- a/
fs/autofs4/dev-ioctl.c
+++ b/
fs/autofs4/dev-ioctl.c
@@
-103,6
+103,9
@@
static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *i
if (tmp.size < sizeof(tmp))
return ERR_PTR(-EINVAL);
+ if (tmp.size > (PATH_MAX + sizeof(tmp)))
+ return ERR_PTR(-ENAMETOOLONG);
+
return memdup_user(in, tmp.size);
}
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