{"cve":"CVE-2022-49223","nvd":{"published":"2025-02-26T07:00:59.363","modified":"2026-06-17T05:17:25.977","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/port: Hold port reference until decoder release\n\nKASAN + DEBUG_KOBJECT_RELEASE reports a potential use-after-free in\ncxl_decoder_release() where it goes to reference its parent, a cxl_port,\nto free its id back to port->decoder_ida.\n\n BUG: KASAN: use-after-free in to_cxl_port+0x18/0x90 [cxl_core]\n Read of size 8 at addr ffff888119270908 by task kworker/35:2/379\n\n CPU: 35 PID: 379 Comm: kworker/35:2 Tainted: G           OE     5.17.0-rc2+ #198\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n Workqueue: events kobject_delayed_cleanup\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0x59/0x73\n  print_address_description.constprop.0+0x1f/0x150\n  ? to_cxl_port+0x18/0x90 [cxl_core]\n  kasan_report.cold+0x83/0xdf\n  ? to_cxl_port+0x18/0x90 [cxl_core]\n  to_cxl_port+0x18/0x90 [cxl_core]\n  cxl_decoder_release+0x2a/0x60 [cxl_core]\n  device_release+0x5f/0x100\n  kobject_cleanup+0x80/0x1c0\n\nThe device core only guarantees parent lifetime until all children are\nunregistered. If a child needs a parent to complete its ->release()\ncallback that child needs to hold a reference to extend the lifetime of\nthe parent.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/49f2dab77a5e1354f5da6ccdc9346a8212697be2","https://git.kernel.org/stable/c/518bb96367123062b48b0a9842f2864249b565f6","https://git.kernel.org/stable/c/74be98774dfbc5b8b795db726bd772e735d2edd4","https://git.kernel.org/stable/c/b0022ca445d5fc4d0c89d15dcd0f855977b22c1d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49223","score":0.00268,"percentile":0.18946,"date":"2026-11-01"},"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."]}