io_uring/napi: cap busy_poll_to 10 msec (Linux Linux)

CVE-2026-53321
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

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.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 42785efe813e5a7d815f3b6be126e1bc0d12d2b6 ; affected 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < 39767f944a8c9e696566c37ad5b20131406c4b8d ; affected 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < cb3af525f8dfb8930f0c123e5755fa967a12d5c1 ; affected 8d0c12a80cdeb80d5e0510e96d38fe551ed8e9b5 < df8599ee18c0e5fe343ffe0b4c379636b8bb839a
Linux · Linuxaffected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.33 ≤ 6.18.* ; unaffected 7.0.10 ≤ 7.0.* ; unaffected 7.1 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD