Pavel Skripkin f80cfe2f26 NFC: port100: fix use-after-free in port100_send_complete ... Syzbot reported UAF in port100_send_complete(). The root case is in missing usb_kill_urb() calls on error handling path of ->probe function. port100_send_complete() accesses devm allocated memory which will be freed on probe failure. We should kill this urbs before returning an error from probe function to prevent reported use-after-free Fail log: BUG: KASAN: use-after-free in port100_send_complete+0x16e/0x1a0 drivers/nfc/port100.c:935 Read of size 1 at addr ffff88801bb59540 by task ksoftirqd/2/26 ... Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x303 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 port100_send_complete+0x16e/0x1a0 drivers/nfc/port100.c:935 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670 ... Allocated by task 1255: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:436 [inline] ____kasan_kmalloc mm/kasan/common.c:515 [inline] ____kasan_kmalloc mm/kasan/common.c:474 [inline] __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:524 alloc_dr drivers/base/devres.c:116 [inline] devm_kmalloc+0x96/0x1d0 drivers/base/devres.c:823 devm_kzalloc include/linux/device.h:209 [inline] port100_probe+0x8a/0x1320 drivers/nfc/port100.c:1502 Freed by task 1255: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free+0xff/0x140 mm/kasan/common.c:328 kasan_slab_free include/linux/kasan.h:236 [inline] __cache_free mm/slab.c:3437 [inline] kfree+0xf8/0x2b0 mm/slab.c:3794 release_nodes+0x112/0x1a0 drivers/base/devres.c:501 devres_release_all+0x114/0x190 drivers/base/devres.c:530 really_probe+0x626/0xcc0 drivers/base/dd.c:670 Reported-and-tested-by: syzbot+16bcb127fb73baeecb14@syzkaller.appspotmail.com Fixes: 0347a6ab30 ("NFC: port100: Commands mechanism implementation") Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20220308185007.6987-1-paskripkin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-03-09 19:59:34 -08:00
..
fdp	nfc: fdp: Merge the same judgment	2021-11-26 11:22:14 -08:00
microread	nfc: microread: drop unneeded debug prints	2021-10-11 17:00:52 -07:00
nfcmrvl	nfc: mrvl: drop unneeded memory allocation fail messages	2021-09-13 14:38:32 +01:00
nxp-nci	nfc: constify nci_ops	2021-07-25 09:21:20 +01:00
pn533	nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails	2021-11-07 19:37:04 +00:00
pn544	nfc: pn544: make array rset_cmd static const	2022-01-11 21:09:03 -08:00
s3fwrn5	nfc: s3fwrn5: simplify dereferencing pointer to struct device	2021-10-11 17:00:51 -07:00
st21nfca	nfc: st21nfca: Fix potential buffer overflows in EVT_TRANSACTION	2022-01-12 14:17:45 +00:00
st95hf	nfc: st95hf: Make spi remove() callback return zero	2021-10-20 14:41:20 +01:00
st-nci	nfc: st-nci: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
Kconfig	nfc: Add a virtual nci device driver	2021-01-29 18:03:33 -08:00
Makefile	nfc: Add a virtual nci device driver	2021-01-29 18:03:33 -08:00
mei_phy.c	nfc: mei_phy: constify buffer passed to mei_nfc_send()	2021-07-29 12:28:02 +01:00
mei_phy.h	nfc: constify nfc_phy_ops	2021-07-25 09:21:21 +01:00
nfcsim.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-07-31 09:14:46 -07:00
port100.c	NFC: port100: fix use-after-free in port100_send_complete	2022-03-09 19:59:34 -08:00
trf7970a.c	nfc: trf7970a: drop unneeded debug prints	2021-10-11 17:00:52 -07:00
virtual_ncidev.c	nfc: virtual_ncidev: change default device permissions	2021-11-26 11:14:31 -08:00