CVE-2026-53321None▾ SunlitIn 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 k…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 42785efe813e5a7d815f3b6be126e1bc0d12d2b6Linux >= 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 39767f944a8c9e696566c37ad5b20131406c4b8dLinux >= 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < cb3af525f8dfb8930f0c123e5755fa967a12d5c1Linux >= 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < df8599ee18c0e5fe343ffe0b4c379636b8bb839aLinux 6.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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