This is a note to let you know that I've just added the patch titled
nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
to the 5.15-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:
nfc-fix-potential-null-pointer-deref-in-nfc_genl_dump_ses_done.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
Date: Thu, 9 Dec 2021 09:13:07 +0100
Subject: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
commit 4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 upstream.
The done() netlink callback nfc_genl_dump_ses_done() should check if
received argument is non-NULL, because its allocation could fail earlier
in dumpit() (nfc_genl_dump_ses()).
Fixes: ac22ac466a65 ("NFC: Add a GET_SE netlink API")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211209081307.57337-1-krzysztof.kozlowski@xxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/nfc/netlink.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1392,8 +1392,10 @@ static int nfc_genl_dump_ses_done(struct
{
struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
- nfc_device_iter_exit(iter);
- kfree(iter);
+ if (iter) {
+ nfc_device_iter_exit(iter);
+ kfree(iter);
+ }
return 0;
}
Patches currently in stable-queue which might be from krzysztof.kozlowski@xxxxxxxxxxxxx are
queue-5.15/nfc-fix-potential-null-pointer-deref-in-nfc_genl_dump_ses_done.patch
