io_uring/kbuf: hold io_buffer_list reference over mmap (Linux Linux)

CVE-2024-35880
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.69 % · centile 53 ()
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/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.

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 09f7520048eaaee9709091cd2787966f807da7c5 < 65938e81df2197203bda4b9a0c477e7987218d66 ; affected 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 < 5fd8e2359498043e0b5329a05f02d10a9eb91eb9 ; affected 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 < 561e4f9451d65fc2f7eef564e0064373e3019793 ; affected 6.6.5 < 6.6.26
Linux · Linuxaffected 6.7 ; unaffected 0 < 6.7 ; unaffected 6.6.26 ≤ 6.6.* ; unaffected 6.8.5 ≤ 6.8.* ; unaffected 6.9 ≤ *

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