iio: mma8452: Fix trigger reference couting (Linux Linux)

CVE-2021-47500
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.24 % · centile 15 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: iio: mma8452: Fix trigger reference couting The mma8452 driver directly assigns a trigger to the struct iio_dev. The IIO core when done using this trigger will call `iio_trigger_put()` to drop the reference count by 1. Without the matching `iio_trigger_get()` in the driver the reference count can reach 0 too early, the trigger gets freed while still in use and a use-after-free occurs. Fix this by getting a reference to the trigger before assigning it to the IIO device.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

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 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected ae6d9ce05691bf79694074db7c7da980080548af < 094d513b78b1714113bc016684b8142382e071ba ; affected ae6d9ce05691bf79694074db7c7da980080548af < fb75cc4740d81264cd5bcb0e17d961d018a8be96 ; affected ae6d9ce05691bf79694074db7c7da980080548af < 794c0898f6bf39a458655d5fb4af70ec43a5cfcb ; affected ae6d9ce05691bf79694074db7c7da980080548af < f5deab10ced368c807866283f8b79144c4823be8 ; affected ae6d9ce05691bf79694074db7c7da980080548af < acf0088ac073ca6e7f4cad6acac112177e08df5e ; affected ae6d9ce05691bf79694074db7c7da980080548af < db12d95085367de8b0223929d1332731024441f1
Linux · Linuxaffected 4.2 ; unaffected 0 < 4.2 ; unaffected 4.4.295 ≤ 4.4.* ; unaffected 4.9.293 ≤ 4.9.* ; unaffected 4.14.258 ≤ 4.14.* ; unaffected 4.19.221 ≤ 4.19.*

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