media: streamzap: fix race between device disconnection and urb callback (Linux Linux)

CVE-2025-22027
MEDIUM 4.7

En bref

Source
NVD
EPSS
EPSS 0.17 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: media: streamzap: fix race between device disconnection and urb callback Syzkaller has reported a general protection fault at function ir_raw_event_store_with_filter(). This crash is caused by a NULL pointer dereference of dev->raw pointer, even though it is checked for NULL in the same function, which means there is a race condition. It occurs due to the incorrect order of actions in the streamzap_disconnect() function: rc_unregister_device() is called before usb_kill_urb(). The dev->raw pointer is freed and set to NULL in rc_unregister_device(), and only after that usb_kill_urb() waits for in-progress requests to finish. If rc_unregister_device() is called while streamzap_callback() handler is not finished, this can lead to accessing freed resources. Thus rc_unregister_device() should be called after usb_kill_urb(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul
  • CWE-362 — Situation de compétition

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 8e9e60640067858e8036d4d43bbf725c60613359 < e11652a6514ec805440c1bb3739e6c6236fffcc7 ; affected 8e9e60640067858e8036d4d43bbf725c60613359 < f1d518c0bad01abe83c2df880274cb6a39f4a457 ; affected 8e9e60640067858e8036d4d43bbf725c60613359 < 30ef7cfee752ca318d5902cb67b60d9797ccd378 ; affected 8e9e60640067858e8036d4d43bbf725c60613359 < 15483afb930fc2f883702dc96f80efbe4055235e ; affected 8e9e60640067858e8036d4d43bbf725c60613359 < adf0ddb914c9e5b3e50da4c97959e82de2df75c3 ; affected 8e9e60640067858e8036d4d43bbf725c60613359 < 4db62b60af2ccdea6ac5452fd20e29587ed85f57
Linux · Linuxaffected 2.6.36 ; unaffected 0 < 2.6.36 ; unaffected 5.10.237 ≤ 5.10.* ; unaffected 5.15.181 ≤ 5.15.* ; unaffected 6.1.134 ≤ 6.1.* ; unaffected 6.6.87 ≤ 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