io_uring: check if iowq is killed before queuing (Linux Linux)

CVE-2024-56709
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.27 % · centile 19 ()
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: check if iowq is killed before queuing task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case. Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
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 773af69121ecc6c53d192661af8d53bb3db028ae < 534d59ab38010aada88390db65985e65d0de7d9e ; affected 773af69121ecc6c53d192661af8d53bb3db028ae < 2ca94c8de36091067b9ce7527ae8db3812d38781 ; affected 773af69121ecc6c53d192661af8d53bb3db028ae < 4f95a2186b7f2af09331e1e8069bcaf34fe019cf ; affected 773af69121ecc6c53d192661af8d53bb3db028ae < dbd2ca9367eb19bc5e269b8c58b0b1514ada9156
Linux · Linuxaffected 5.14 ; unaffected 0 < 5.14 ; unaffected 6.1.122 ≤ 6.1.* ; unaffected 6.6.68 ≤ 6.6.* ; unaffected 6.12.7 ≤ 6.12.* ; unaffected 6.13 ≤ *

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