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[PATCH] module: strlen_user() race fix

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Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-02-07 12:58:45 -08:00 committed by Linus Torvalds
parent 48b8c10056
commit 8e08b75686
1 changed files with 3 additions and 0 deletions
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3
kernel/module.c
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@ -1670,6 +1670,9 @@ static struct module *load_module(void __user *umod,
goto free_mod;
}
/* Userspace could have altered the string after the strlen_user() */
args[arglen - 1] = '\0';
if (find_module(mod->name)) {
err = -EEXIST;
goto free_mod;