uselib: add missing MNT_NOEXEC check
We don't allow loading ELF shared library from noexec points so the same should apply to sys_uselib aswell. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ulrich Drepper <drepper@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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492c8b332e
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@ -134,6 +134,9 @@ asmlinkage long sys_uselib(const char __user * library)
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if (error)
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goto out;
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error = -EACCES;
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if (nd.mnt->mnt_flags & MNT_NOEXEC)
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goto exit;
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error = -EINVAL;
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if (!S_ISREG(nd.dentry->d_inode->i_mode))
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goto exit;
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