This is a note to let you know that I've just added the patch titled
cfg80211: regulatory: reject invalid hints
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cfg80211-regulatory-reject-invalid-hints.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 47caf685a6854593348f216e0b489b71c10cbe03 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Wed, 19 Aug 2020 10:46:48 +0200
Subject: cfg80211: regulatory: reject invalid hints
From: Johannes Berg <johannes.berg@xxxxxxxxx>
commit 47caf685a6854593348f216e0b489b71c10cbe03 upstream.
Reject invalid hints early in order to not cause a kernel
WARN later if they're restored to or similar.
Reported-by: syzbot+d451401ffd00a60677ee@xxxxxxxxxxxxxxxxxxxxxxxxx
Link: https://syzkaller.appspot.com/bug?extid=d451401ffd00a60677ee
Link: https://lore.kernel.org/r/20200819084648.13956-1-johannes@xxxxxxxxxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/wireless/reg.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2408,6 +2408,9 @@ int regulatory_hint_user(const char *alp
if (WARN_ON(!alpha2))
return -EINVAL;
+ if (!is_world_regdom(alpha2) && !is_an_alpha2(alpha2))
+ return -EINVAL;
+
request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
if (!request)
return -ENOMEM;
Patches currently in stable-queue which might be from johannes.berg@xxxxxxxxx are
queue-4.14/cfg80211-regulatory-reject-invalid-hints.patch
