{"cve":"CVE-2022-48857","nvd":{"published":"2024-07-16T13:15:12.733","modified":"2026-06-17T05:16:23.763","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: port100: fix use-after-free in port100_send_complete\n\nSyzbot reported UAF in port100_send_complete(). The root case is in\nmissing usb_kill_urb() calls on error handling path of ->probe function.\n\nport100_send_complete() accesses devm allocated memory which will be\nfreed on probe failure. We should kill this urbs before returning an\nerror from probe function to prevent reported use-after-free\n\nFail log:\n\nBUG: KASAN: use-after-free in port100_send_complete+0x16e/0x1a0 drivers/nfc/port100.c:935\nRead of size 1 at addr ffff88801bb59540 by task ksoftirqd/2/26\n...\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0x8d/0x303 mm/kasan/report.c:255\n __kasan_report mm/kasan/report.c:442 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\n port100_send_complete+0x16e/0x1a0 drivers/nfc/port100.c:935\n __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670\n\n...\n\nAllocated by task 1255:\n kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:45 [inline]\n set_alloc_info mm/kasan/common.c:436 [inline]\n ____kasan_kmalloc mm/kasan/common.c:515 [inline]\n ____kasan_kmalloc mm/kasan/common.c:474 [inline]\n __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:524\n alloc_dr drivers/base/devres.c:116 [inline]\n devm_kmalloc+0x96/0x1d0 drivers/base/devres.c:823\n devm_kzalloc include/linux/device.h:209 [inline]\n port100_probe+0x8a/0x1320 drivers/nfc/port100.c:1502\n\nFreed by task 1255:\n kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38\n kasan_set_track+0x21/0x30 mm/kasan/common.c:45\n kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370\n ____kasan_slab_free mm/kasan/common.c:366 [inline]\n ____kasan_slab_free+0xff/0x140 mm/kasan/common.c:328\n kasan_slab_free include/linux/kasan.h:236 [inline]\n __cache_free mm/slab.c:3437 [inline]\n kfree+0xf8/0x2b0 mm/slab.c:3794\n release_nodes+0x112/0x1a0 drivers/base/devres.c:501\n devres_release_all+0x114/0x190 drivers/base/devres.c:530\n really_probe+0x626/0xcc0 drivers/base/dd.c:670","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/0e721b8f2ee5e11376dd55363f9ccb539d754b8a","https://git.kernel.org/stable/c/205c4ec78e71cbf561794e6043da80e7bae6790f","https://git.kernel.org/stable/c/2b1c85f56512d49e43bc53741fce2f508cd90029","https://git.kernel.org/stable/c/32e866ae5a7af590597ef4bcff8451bf96d5f980","https://git.kernel.org/stable/c/7194737e1be8fdc89d2a9382bd2f371f7ee2eda8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:42.518321223+00:00"},"epss":{"cve":"CVE-2022-48857","score":0.00205,"percentile":0.10546,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}