CVE-2022-48857

NFC: port100: fix use-after-free in port100_send_complete

MEDIUM

5.5

CVSS Score

Published: July 16, 2024 at 12:25 PM UTC

Updated: June 17, 2026 at 05:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: 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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.13 ≤ v < 4.14.2723.13 ≤ v < 4.19.2353.13 ≤ v < 4.9.3073.13 ≤ v < 5.10.1063.13 ≤ v < 5.15.293.13 ≤ v < 5.16.153.13 ≤ v < 5.173.13 ≤ v < 5.4.1854.10 ≤ v < 4.14.2724.15 ≤ v < 4.19.2354.20 ≤ v < 5.4.1855.11 ≤ v < 5.15.295.16 ≤ v < 5.16.155.5 ≤ v < 5.10.1063.13347a6ab300a1532c298823408d6e51ccf4e4f45

Vendor states this is fixed in 0e721b8f2ee5e11376dd55363f9ccb539d754b8a (fixed)

Vendor states this is fixed in 205c4ec78e71cbf561794e6043da80e7bae6790f (fixed)

Vendor states this is fixed in 2b1c85f56512d49e43bc53741fce2f508cd90029 (fixed)

Vendor states this is fixed in 32e866ae5a7af590597ef4bcff8451bf96d5f980 (fixed)

Vendor states this is fixed in 7194737e1be8fdc89d2a9382bd2f371f7ee2eda8 (fixed)

Vendor states this is fixed in b1db33d4e54bc35d8db96ce143ea0ef92e23d58e (fixed)

Vendor states this is fixed in cd2a5c0da0d1ddf11d1f84e9c9b1949f50f6e161 (fixed)

Vendor states this is fixed in f80cfe2f26581f188429c12bd937eb905ad3ac7b (fixed)

Vendor states this is fixed in 3.13 (unaffected)

Vendor states this is fixed in 4.14.272 (unaffected)

Vendor states this is fixed in 4.19.235 (unaffected)

Vendor states this is fixed in 4.9.307 (unaffected)