CVE-2026-53321
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-06-26
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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 Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 42785efe813e5a7d815f3b6be126e1bc0d12d2b6 |
| Linux | Linux | 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 39767f944a8c9e696566c37ad5b20131406c4b8d |
| Linux | Linux | 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < cb3af525f8dfb8930f0c123e5755fa967a12d5c1 |
| Linux | Linux | 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < df8599ee18c0e5fe343ffe0b4c379636b8bb839a |
| Linux | Linux | 6.9 |
| linux | linux_kernel | 6.9 – 6.18.33 |
| linux | linux_kernel | 7.1 |