CVE-2026-23080

Description

In the Linux kernel, the following vulnerability has been resolved: can: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In mcba_usb_probe() -> mcba_usb_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback mcba_usb_read_bulk_callback(), the URBs are processed and resubmitted. In mcba_usb_close() -> mcba_urb_unlink() the URBs are freed by calling usb_kill_anchored_urbs(&priv->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in usb_kill_anchored_urbs(). Fix the memory leak by anchoring the URB in the mcba_usb_read_bulk_callback()to the priv->rx_submitted anchor.

Gravité et risque d'exploitation

CVE-2026-23080 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 0.14 %, ce qui la place devant 3.3 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <59153b6388e05609144ad56a9b354e9100a91983, <=6.12.*, <d374d715e338dfc3804aaa006fa6e470ffebb264, 0, 5.15.199, <=5.10.*, <=6.6.*, 5.10.249, 6.18.8, 4.12, 6.1.162, <8b34c611a4feb81921bc4728c091e4e3ba0270c0, <=6.18.*, <b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60, 6.12.68, 51f3baad7de943780ce0c17bd7975df567dd6e14, <=*, <=5.15.*, <179f6f0cf5ae489743273b7c1644324c0c477ea9, <4.12, 6.19, 6.6.122, <710a7529fb13c5a470258ff5508ed3c498d54729, <94c9f6f7b953f6382fef4bdc48c046b861b8868f) 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/8b34c611a4feb81921bc4728c091e4e3ba0270c0
• https://git.kernel.org/stable/c/b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60
• https://git.kernel.org/stable/c/59153b6388e05609144ad56a9b354e9100a91983
• https://git.kernel.org/stable/c/179f6f0cf5ae489743273b7c1644324c0c477ea9
• https://git.kernel.org/stable/c/94c9f6f7b953f6382fef4bdc48c046b861b8868f
• https://git.kernel.org/stable/c/d374d715e338dfc3804aaa006fa6e470ffebb264
• https://git.kernel.org/stable/c/710a7529fb13c5a470258ff5508ed3c498d54729