{"cve":"CVE-2023-52901","nvd":{"published":"2024-08-21T07:15:06.363","modified":"2026-06-17T06:43:53.747","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Check endpoint is valid before dereferencing it\n\nWhen the host controller is not responding, all URBs queued to all\nendpoints need to be killed. This can cause a kernel panic if we\ndereference an invalid endpoint.\n\nFix this by using xhci_get_virt_ep() helper to find the endpoint and\nchecking if the endpoint is valid before dereferencing it.\n\n[233311.853271] xhci-hcd xhci-hcd.1.auto: xHCI host controller not responding, assume dead\n[233311.853393] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000e8\n\n[233311.853964] pc : xhci_hc_died+0x10c/0x270\n[233311.853971] lr : xhci_hc_died+0x1ac/0x270\n\n[233311.854077] Call trace:\n[233311.854085]  xhci_hc_died+0x10c/0x270\n[233311.854093]  xhci_stop_endpoint_command_watchdog+0x100/0x1a4\n[233311.854105]  call_timer_fn+0x50/0x2d4\n[233311.854112]  expire_timers+0xac/0x2e4\n[233311.854118]  run_timer_softirq+0x300/0xabc\n[233311.854127]  __do_softirq+0x148/0x528\n[233311.854135]  irq_exit+0x194/0x1a8\n[233311.854143]  __handle_domain_irq+0x164/0x1d0\n[233311.854149]  gic_handle_irq.22273+0x10c/0x188\n[233311.854156]  el1_irq+0xfc/0x1a8\n[233311.854175]  lpm_cpuidle_enter+0x25c/0x418 [msm_pm]\n[233311.854185]  cpuidle_enter_state+0x1f0/0x764\n[233311.854194]  do_idle+0x594/0x6ac\n[233311.854201]  cpu_startup_entry+0x7c/0x80\n[233311.854209]  secondary_start_kernel+0x170/0x198","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-476"],"references":["https://git.kernel.org/stable/c/08864dc14a6803f0377ca77b9740b26db30c020f","https://git.kernel.org/stable/c/2d2820d5f375563690c96e60676855205abfb7f5","https://git.kernel.org/stable/c/375be2dd61a072f7b1cac9b17eea59e07b58db3a","https://git.kernel.org/stable/c/66fc1600855c05c4ba4e997184c91cf298e0405c","https://git.kernel.org/stable/c/9891e5c73cab3fd9ed532dc50e9799e55e974766"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2023-52901","score":0.0024,"percentile":0.15127,"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."]}