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[PATCH] module: strlen_user() race fix
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -1670,6 +1670,9 @@ static struct module *load_module(void __user *umod,
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goto free_mod;
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}
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/* Userspace could have altered the string after the strlen_user() */
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args[arglen - 1] = '\0';
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if (find_module(mod->name)) {
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err = -EEXIST;
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goto free_mod;
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