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uevent: don't pass envp_ext[] as format string in kobject_uevent_env()

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kobject_uevent_env() uses envp_ext[] as verbatim format string which
can cause problems ranging from unexpectedly mangled string to oops if
a string in envp_ext[] contains substring which can be interpreted as
format.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tejun Heo 2008-11-13 13:20:00 +09:00 committed by Greg Kroah-Hartman
parent fce3e804cf
commit c65b9145f4
1 changed files with 1 additions and 1 deletions
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2
lib/kobject_uevent.c
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@ -165,7 +165,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
/* keys passed in from the caller */
if (envp_ext) {
for (i = 0; envp_ext[i]; i++) {
retval = add_uevent_var(env, envp_ext[i]);
retval = add_uevent_var(env, "%s", envp_ext[i]);
if (retval)
goto exit;
}