i2c: stm32f7: Do not prepare/unprepare clock during runtime suspend/resume (Linux Linux)

CVE-2024-49985
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.20 % · centile 10 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: stm32f7: Do not prepare/unprepare clock during runtime suspend/resume In case there is any sort of clock controller attached to this I2C bus controller, for example Versaclock or even an AIC32x4 I2C codec, then an I2C transfer triggered from the clock controller clk_ops .prepare callback may trigger a deadlock on drivers/clk/clk.c prepare_lock mutex. This is because the clock controller first grabs the prepare_lock mutex and then performs the prepare operation, including its I2C access. The I2C access resumes this I2C bus controller via .runtime_resume callback, which calls clk_prepare_enable(), which attempts to grab the prepare_lock mutex again and deadlocks. Since the clock are already prepared since probe() and unprepared in remove(), use simple clk_enable()/clk_disable() calls to enable and disable the clock on runtime suspend and resume, to avoid hitting the prepare_lock mutex.

Faiblesses (CWE)

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 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < d6f1250a4d5773f447740b9fe37b8692105796d4 ; affected 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < 9b8bc33ad64192f54142396470cc34ce539a8940 ; affected 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < 1883cad2cc629ded4a3556c0bbb8b42533ad8764 ; affected 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < c2024b1a583ab9176c797ea1e5f57baf8d5e2682 ; affected 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < 22a1f8a5b56ba93d3e8b7a1dafa24e01c8bb48ba ; affected 4e7bca6fc07bf9526d797b9787dcb21e40cd10cf < fac3c9f7784e8184c0338e9f0877b81e55d3ef1c
Linux · Linuxaffected 5.0 ; unaffected 0 < 5.0 ; unaffected 5.4.285 ≤ 5.4.* ; unaffected 5.10.227 ≤ 5.10.* ; unaffected 5.15.168 ≤ 5.15.* ; unaffected 6.1.113 ≤ 6.1.*

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