This is a note to let you know that I've just added the patch titled net: fddi: fix UAF in fza_probe to the 5.10-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: net-fddi-fix-uaf-in-fza_probe.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From deb7178eb940e2c5caca1b1db084a69b2e59b4c9 Mon Sep 17 00:00:00 2001 From: Pavel Skripkin <paskripkin@xxxxxxxxx> Date: Tue, 13 Jul 2021 13:58:53 +0300 Subject: net: fddi: fix UAF in fza_probe From: Pavel Skripkin <paskripkin@xxxxxxxxx> commit deb7178eb940e2c5caca1b1db084a69b2e59b4c9 upstream. fp is netdev private data and it cannot be used after free_netdev() call. Using fp after free_netdev() can cause UAF bug. Fix it by moving free_netdev() after error message. Fixes: 61414f5ec983 ("FDDI: defza: Add support for DEC FDDIcontroller 700 TURBOchannel adapter") Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/fddi/defza.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/net/fddi/defza.c +++ b/drivers/net/fddi/defza.c @@ -1504,9 +1504,8 @@ err_out_resource: release_mem_region(start, len); err_out_kfree: - free_netdev(dev); - pr_err("%s: initialization failure, aborting!\n", fp->name); + free_netdev(dev); return ret; } Patches currently in stable-queue which might be from paskripkin@xxxxxxxxx are queue-5.10/net-ti-fix-uaf-in-tlan_remove_one.patch queue-5.10/net-qcom-emac-fix-uaf-in-emac_remove.patch queue-5.10/net-fddi-fix-uaf-in-fza_probe.patch queue-5.10/net-moxa-fix-uaf-in-moxart_mac_probe.patch