CVE-2026-98428
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: 6fire: Avoid embedded URBs The USB 6fire driver uses URBs embedded in different structs for PCM, MIDI and communication, and this is basically a buggy implementation nowadays; since a URB is managed with a refcount, this may lead to a UAF when the URB is released asynchronously. For addressing the problem, this patch converts those embedded URBs to ones that are properly allocated via usb_alloc_urb(). The pcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence it's found in urb.iso_frame_desc[] instead. The conversions are rather straightforward; each embedded struct urb is changed to a pointer, and its callers are updated accordingly. The resource for those structs are released in the common destructor functions (usb6fire_comm_free(), etc), which are called at both the init error path and the disconnect. No functional changes, only compile-tested.
Gravité et risque d'exploitation
CVE-2026-98428 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.21 %, ce qui la place devant 11.2 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 0, <9fe49dbc023e82dfaee7b245997d820d01742a9a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, <7.2.8, 6.12.112, 6.6.158, <=6.6.*, <d181434549b3da668110a25d743848cce9897f4e, 6.1.189, <3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a, <6.6.158, <52a43c2d57e774489ac3fbbac06ff02f19bd9a52, 7.2.8, <=6.18.*, <6.18.54, <=7.2.*, <6.1.189, <8b8559aeaba2e51cfee1779b2383b085991f7d81, <=*, <999f433c09e4668412bd68ca207ae2b4af863862, 6.18.54, <6.12.112, 7.3) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://git.kernel.org/stable/c/3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a
- https://git.kernel.org/stable/c/8b8559aeaba2e51cfee1779b2383b085991f7d81
- https://git.kernel.org/stable/c/52a43c2d57e774489ac3fbbac06ff02f19bd9a52
- https://git.kernel.org/stable/c/999f433c09e4668412bd68ca207ae2b4af863862
- https://git.kernel.org/stable/c/d181434549b3da668110a25d743848cce9897f4e
- https://git.kernel.org/stable/c/9fe49dbc023e82dfaee7b245997d820d01742a9a