hwmon: (powerz) Fix use-after-free on USB disconnect (Linux Linux)

CVE-2026-31582
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 2 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix use-after-free on USB disconnect After powerz_disconnect() frees the URB and releases the mutex, a subsequent powerz_read() call can acquire the mutex and call powerz_read_data(), which dereferences the freed URB pointer. Fix by: - Setting priv->urb to NULL in powerz_disconnect() so that powerz_read_data() can detect the disconnected state. - Adding a !priv->urb check at the start of powerz_read_data() to return -ENODEV on a disconnected device. - Moving usb_set_intfdata() before hwmon registration so the disconnect handler can always find the priv pointer.

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:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 4381a36abdf1c5c0323c1c51f869dc000115eb20 < c78e1d4e48f23792adaa7c94251e22b0d9700a39 ; affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 < 9e1b798257f96d2e2a2639830eb71add545ce749 ; affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 < 7003ae4810ca83f0ddca85b768500e313c4b998c ; affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 < 61f2aa23b0ce8d7aa5071ed25a7471e246a4fdd4 ; affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 < 08e57f5e1a9067d5fbf33993aa7f51d60b3d13a4
Linux · Linuxaffected 6.7 ; unaffected 0 < 6.7 ; unaffected 6.12.83 ≤ 6.12.* ; unaffected 6.18.24 ≤ 6.18.* ; unaffected 6.19.14 ≤ 6.19.* ; unaffected 7.0.1 ≤ 7.0.*

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