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 4.9 09/42] nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
Date: Mon, 13 Dec 2021 10:29:51 +0100 [thread overview]
Message-ID: <20211213092926.887689777@linuxfoundation.org> (raw)
In-Reply-To: <20211213092926.578829548@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
@@ -1403,8 +1403,10 @@ 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 9:35 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-13 9:29 [PATCH 4.9 00/42] 4.9.293-rc1 review Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 01/42] HID: introduce hid_is_using_ll_driver Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 02/42] HID: add hid_is_usb() function to make it simpler for USB detection Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 03/42] HID: add USB_HID dependancy to hid-prodikeys Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 04/42] HID: add USB_HID dependancy to hid-chicony Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 05/42] HID: add USB_HID dependancy on some USB HID drivers Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 06/42] HID: wacom: fix problems when device is not a valid USB device Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 07/42] HID: check for valid USB device for many HID drivers Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 08/42] 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 4.9 10/42] IB/hfi1: Correct guard on eager buffer deallocation Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 11/42] mm: bdi: initialize bdi_min_ratio when bdi is unregistered Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 12/42] ALSA: ctl: Fix copy of updated id with element read/write Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 13/42] ALSA: pcm: oss: Fix negative period/buffer sizes Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 14/42] ALSA: pcm: oss: Limit the period size to 16MB Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 15/42] ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 16/42] tracefs: Have new files inherit the ownership of their parent Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 17/42] can: pch_can: pch_can_rx_normal: fix use after free Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 18/42] libata: add horkage for ASMedia 1092 Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 19/42] wait: add wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 20/42] binder: use wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 21/42] signalfd: " Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 22/42] tracefs: Set all files to the same group ownership as the mount option Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 23/42] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 24/42] net: cdc_ncm: Allow for dwNtbOutMaxSize to be unset or zero Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 25/42] net: altera: set a couple error code in probe() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 26/42] net: fec: only clear interrupt of handling queue in fec_enet_rx_queue() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 27/42] net, neigh: clear whole pneigh_entry at alloc time Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 28/42] net/qla3xxx: fix an error code in ql_adapter_up() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 29/42] USB: gadget: detect too-big endpoint 0 requests Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 30/42] USB: gadget: zero allocate endpoint 0 buffers Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 31/42] usb: core: config: fix validation of wMaxPacketValue entries Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 32/42] usb: core: config: using bit mask instead of individual bits Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 33/42] iio: stk3310: Dont return error code in interrupt handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 34/42] iio: mma8452: Fix trigger reference couting Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 35/42] iio: ltr501: Dont return error code in trigger handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 36/42] iio: kxsd9: " Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 37/42] iio: itg3200: Call iio_trigger_notify_done() on error Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 38/42] iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 39/42] irqchip/armada-370-xp: Fix return value of armada_370_xp_msi_alloc() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 40/42] irqchip/armada-370-xp: Fix support for Multi-MSI interrupts Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 41/42] irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 42/42] irqchip: nvic: Fix offset for Interrupt Priority Offsets Greg Kroah-Hartman
2021-12-13 19:54 ` [PATCH 4.9 00/42] 4.9.293-rc1 review Guenter Roeck
2021-12-13 20:00 ` Florian Fainelli
2021-12-13 20:31 ` Shuah Khan
2021-12-14 5:53 ` Naresh Kamboju
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