From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 4.4 09/37] nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
Date: Mon, 13 Dec 2021 10:29:47 +0100 [thread overview]
Message-ID: <20211213092925.677141957@linuxfoundation.org> (raw)
In-Reply-To: <20211213092925.380184671@linuxfoundation.org>
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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@canonical.com>
Link: https://lore.kernel.org/r/20211209081307.57337-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/nfc/netlink.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1366,8 +1366,10 @@ 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;
}
next prev parent reply other threads:[~2021-12-13 9:33 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-13 9:29 [PATCH 4.4 00/37] 4.4.295-rc1 review Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 01/37] HID: introduce hid_is_using_ll_driver Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 02/37] HID: add hid_is_usb() function to make it simpler for USB detection Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 03/37] HID: add USB_HID dependancy to hid-prodikeys Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 04/37] HID: add USB_HID dependancy to hid-chicony Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 05/37] HID: add USB_HID dependancy on some USB HID drivers Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 06/37] HID: wacom: fix problems when device is not a valid USB device Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 07/37] HID: check for valid USB device for many HID drivers Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 08/37] can: sja1000: fix use after free in ems_pcmcia_add_card() Greg Kroah-Hartman
2021-12-13 9:29 ` Greg Kroah-Hartman [this message]
2021-12-13 9:29 ` [PATCH 4.4 10/37] mm: bdi: initialize bdi_min_ratio when bdi is unregistered Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 11/37] ALSA: ctl: Fix copy of updated id with element read/write Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 12/37] ALSA: pcm: oss: Fix negative period/buffer sizes Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 13/37] ALSA: pcm: oss: Limit the period size to 16MB Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 14/37] ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 15/37] tracefs: Have new files inherit the ownership of their parent Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 16/37] can: pch_can: pch_can_rx_normal: fix use after free Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 17/37] libata: add horkage for ASMedia 1092 Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 18/37] wait: add wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 19/37] binder: use wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 20/37] signalfd: " Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.4 21/37] tracefs: Set all files to the same group ownership as the mount option Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 22/37] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 23/37] net: cdc_ncm: Allow for dwNtbOutMaxSize to be unset or zero Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 24/37] net: altera: set a couple error code in probe() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 25/37] net: fec: only clear interrupt of handling queue in fec_enet_rx_queue() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 26/37] net, neigh: clear whole pneigh_entry at alloc time Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 27/37] net/qla3xxx: fix an error code in ql_adapter_up() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 28/37] USB: gadget: detect too-big endpoint 0 requests Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 29/37] USB: gadget: zero allocate endpoint 0 buffers Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 30/37] usb: core: config: fix validation of wMaxPacketValue entries Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 31/37] iio: stk3310: Dont return error code in interrupt handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 32/37] iio: mma8452: Fix trigger reference couting Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 33/37] iio: ltr501: Dont return error code in trigger handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 34/37] iio: itg3200: Call iio_trigger_notify_done() on error Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 35/37] iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 36/37] irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.4 37/37] irqchip: nvic: Fix offset for Interrupt Priority Offsets Greg Kroah-Hartman
2021-12-13 10:31 ` [PATCH 4.4 00/37] 4.4.295-rc1 review Pavel Machek
2021-12-13 14:42 ` Jon Hunter
2021-12-13 19:54 ` Guenter Roeck
2021-12-13 20:31 ` Shuah Khan
2021-12-14 8:01 ` Naresh Kamboju
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