CVE-2025-23147

Description

In the Linux kernel, the following vulnerability has been resolved: i3c: Add NULL pointer check in i3c_master_queue_ibi() The I3C master driver may receive an IBI from a target device that has not been probed yet. In such cases, the master calls `i3c_master_queue_ibi()` to queue an IBI work task, leading to "Unable to handle kernel read from unreadable memory" and resulting in a kernel panic. Typical IBI handling flow: 1. The I3C master scans target devices and probes their respective drivers. 2. The target device driver calls `i3c_device_request_ibi()` to enable IBI and assigns `dev->ibi = ibi`. 3. The I3C master receives an IBI from the target device and calls `i3c_master_queue_ibi()` to queue the target device driver’s IBI handler task. However, since target device events are asynchronous to the I3C probe sequence, step 3 may occur before step 2, causing `dev->ibi` to be `NULL`, leading to a kernel panic. Add a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing an uninitialized `dev->ibi`, ensuring stability.

Gravité et risque d'exploitation

CVE-2025-23147 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 0.22 %, ce qui la place devant 11.3 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <=6.14.*, <1b54faa5f47fa7c642179744aeff03f0810dc62e, 0, <fe4a4fc179b7898055555a11685915473588392e, 5.10.237, <d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f, <e6bba328578feb58c614c11868c259b40484c5fa, 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, <ff9d61db59bb27d16d3f872bff2620d50856b80c, <=5.10.*, <=6.6.*, 6.12.24, <3ba402610843d7d15c7f3966a461deeeaff7fba4, 5.0, 6.13.12, 6.1.135, 6.14.3, <=5.4.*, <5.0, <09359e7c8751961937cb5fc50220969b0a4e1058, 6.15, <6871a676aa534e8f218279672e0445c725f81026, <=*, <bd496a44f041da9ef3afe14d1d6193d460424e91, <=5.15.*, 5.15.181, <=6.13.*, 6.6.88, 5.4.293) 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/1b54faa5f47fa7c642179744aeff03f0810dc62e
• https://git.kernel.org/stable/c/09359e7c8751961937cb5fc50220969b0a4e1058
• https://git.kernel.org/stable/c/3ba402610843d7d15c7f3966a461deeeaff7fba4
• https://git.kernel.org/stable/c/d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f
• https://git.kernel.org/stable/c/6871a676aa534e8f218279672e0445c725f81026
• https://git.kernel.org/stable/c/e6bba328578feb58c614c11868c259b40484c5fa
• https://git.kernel.org/stable/c/fe4a4fc179b7898055555a11685915473588392e
• https://git.kernel.org/stable/c/ff9d61db59bb27d16d3f872bff2620d50856b80c
• https://git.kernel.org/stable/c/bd496a44f041da9ef3afe14d1d6193d460424e91