CVEvulnerability

CVE-2026-53321

5.5 MEDIUM Published 2026-06-26 Modified 2026-10-21 Official page ↗
Status
Modified
Published
2026-06-26
Last modified
2026-10-21
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/napi: cap busy_poll_to 10 msec Currently there's no cap on the maximum amount of time that napi is allowed to poll if no events are found, which can lead to kernel complaints on a task being stuck as there's no conditional rescheduling done within that loop. Just cap it to 10 msec in total, that's already way above any kind of sane value that will reap any benefits, yet low enough that it's nowhere near being able to trigger preemption complaints.

Affected configurations

• linux linux kernel (>= 6.9 < 6.18.33) • linux linux kernel (>= 6.19 < 7.0.10) • linux linux kernel 7.1

References