{"cve":"CVE-2026-31480","nvd":{"published":"2026-04-22T14:16:45.170","modified":"2026-06-17T10:33:49.400","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix potential deadlock in cpu hotplug with osnoise\n\nThe following sequence may leads deadlock in cpu hotplug:\n\n    task1        task2        task3\n    -----        -----        -----\n\n mutex_lock(&interface_lock)\n\n            [CPU GOING OFFLINE]\n\n            cpus_write_lock();\n            osnoise_cpu_die();\n              kthread_stop(task3);\n                wait_for_completion();\n\n                      osnoise_sleep();\n                        mutex_lock(&interface_lock);\n\n cpus_read_lock();\n\n [DEAD LOCK]\n\nFix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).","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-667"],"references":["https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831","https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55","https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f","https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f","https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-31480","score":0.00095,"percentile":0.00592,"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."]}