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Commit 8e08b756 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
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[PATCH] module: strlen_user() race fix 



Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 48b8c100

kernel/module.c

+3 −0
Original line number Diff line number Diff line
@@ -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;