{"cve":"CVE-2023-53475","nvd":{"published":"2025-10-01T12:15:49.830","modified":"2026-06-17T06:45:25.483","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: tegra: fix sleep in atomic call\n\nWhen we set the dual-role port to Host mode, we observed the following\nsplat:\n[  167.057718] BUG: sleeping function called from invalid context at\ninclude/linux/sched/mm.h:229\n[  167.057872] Workqueue: events tegra_xusb_usb_phy_work\n[  167.057954] Call trace:\n[  167.057962]  dump_backtrace+0x0/0x210\n[  167.057996]  show_stack+0x30/0x50\n[  167.058020]  dump_stack_lvl+0x64/0x84\n[  167.058065]  dump_stack+0x14/0x34\n[  167.058100]  __might_resched+0x144/0x180\n[  167.058140]  __might_sleep+0x64/0xd0\n[  167.058171]  slab_pre_alloc_hook.constprop.0+0xa8/0x110\n[  167.058202]  __kmalloc_track_caller+0x74/0x2b0\n[  167.058233]  kvasprintf+0xa4/0x190\n[  167.058261]  kasprintf+0x58/0x90\n[  167.058285]  tegra_xusb_find_port_node.isra.0+0x58/0xd0\n[  167.058334]  tegra_xusb_find_port+0x38/0xa0\n[  167.058380]  tegra_xusb_padctl_get_usb3_companion+0x38/0xd0\n[  167.058430]  tegra_xhci_id_notify+0x8c/0x1e0\n[  167.058473]  notifier_call_chain+0x88/0x100\n[  167.058506]  atomic_notifier_call_chain+0x44/0x70\n[  167.058537]  tegra_xusb_usb_phy_work+0x60/0xd0\n[  167.058581]  process_one_work+0x1dc/0x4c0\n[  167.058618]  worker_thread+0x54/0x410\n[  167.058650]  kthread+0x188/0x1b0\n[  167.058672]  ret_from_fork+0x10/0x20\n\nThe function tegra_xusb_padctl_get_usb3_companion eventually calls\ntegra_xusb_find_port and this in turn calls kasprintf which might sleep\nand so cannot be called from an atomic context.\n\nFix this by moving the call to tegra_xusb_padctl_get_usb3_companion to\nthe tegra_xhci_id_work function where it is really needed.","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":[],"references":["https://git.kernel.org/stable/c/1122474b757a5dd8b2b50008a97f33cdb10dff6e","https://git.kernel.org/stable/c/130c61c516cd0684282a8f6ab163281d60642fc5","https://git.kernel.org/stable/c/1fe6015aa92cc0dfd875c1d3c7c1750a1b0767d9","https://git.kernel.org/stable/c/4c7f9d2e413dc06a157c4e5dccde84aaf4655eb3","https://git.kernel.org/stable/c/b4b4f17aa46c025da77aed5133b08971959c9684"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2023-53475","score":0.00159,"percentile":0.05027,"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."]}