CVE-2024-35790

usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group

MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.23 % · centile 14 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

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 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < 6b989ea1c479533ab8dbfbeb1704c94b1d3320da ; affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < 9794ffd9d0c39ee070fbd733f862bbe89b28ba33 ; affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < f1c5ddaef506e3517dce338c08a60663b1521920 ; affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < 4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0 ; affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < 0ad011776c057ce881b7fd6d8c79ecd459c087e9 ; affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 < 165376f6b23e9a779850e750fb2eb06622e5a531
Linux · Linuxaffected 4.19 ; unaffected 0 < 4.19 ; unaffected 5.10.238 ≤ 5.10.* ; unaffected 5.15.184 ≤ 5.15.* ; unaffected 6.1.140 ≤ 6.1.* ; unaffected 6.6.24 ≤ 6.6.*

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