{"cve":"CVE-2026-53321","nvd":{"published":"2026-06-26T20:17:25.460","modified":"2026-10-21T13:19:14.910","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/napi: cap busy_poll_to 10 msec\n\nCurrently there's no cap on the maximum amount of time that napi is\nallowed to poll if no events are found, which can lead to kernel\ncomplaints on a task being stuck as there's no conditional rescheduling\ndone within that loop.\n\nJust cap it to 10 msec in total, that's already way above any kind of\nsane value that will reap any benefits, yet low enough that it's\nnowhere near being able to trigger preemption complaints.","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/39767f944a8c9e696566c37ad5b20131406c4b8d","https://git.kernel.org/stable/c/42785efe813e5a7d815f3b6be126e1bc0d12d2b6","https://git.kernel.org/stable/c/cb3af525f8dfb8930f0c123e5755fa967a12d5c1","https://git.kernel.org/stable/c/df8599ee18c0e5fe343ffe0b4c379636b8bb839a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-53321","score":0.00162,"percentile":0.05311,"date":"2026-10-25"},"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."]}