CVE-2026-98210

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: mxcmmc: cancel data work and watchdog on remove mxcmci_remove() frees the host through the devm tail, but neither it nor mmc_remove_host() drains the driver's own asynchronous state. host->watchdog, a 10 s timer armed on the DMA path in mxcmci_setup_data(), is deleted only by the DMA- and IRQ-complete paths, which the remove path does not explicitly drain; it can therefore fire after the host is freed and dereference it in mxcmci_watchdog(). host->datawork, armed from the IRQ handler on the PIO path, is not cancelled by the remove path either. Free the devm-registered IRQ, then cancel datawork and delete the watchdog in mxcmci_remove(), before dma_release_channel(). Freeing the IRQ first keeps a trailing handler from re-arming datawork between the cancel and the host free. Both callbacks are non-self-rearming. This issue was found by an in-house static analysis tool.

Gravité et risque d'exploitation

CVE-2026-98210 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 0.18 %, ce qui la place devant 7.5 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <ae10838a7cdf0e54caa9d0a4f488704fd04e7f01, 0, <23383e0578b58ba2dc0730cf9f7806bd66bf859a, 6.12.112, 5.10.271, 6.6.158, <=5.10.*, <=6.6.*, 6.1.189, <d3a421c82412344022982d5b91ba23194a0a6f29, 7.2.8, f6ad0a481342223b2e7ae9f55b154e14f1391ada, <=6.18.*, <d3641afe6ee76d852834a34ef0669eefced32752, 5.15.222, <740f595f8ad678cb4d79f13edd12851df2492bdd, <=7.2.*, <3.7, <a1ff367e0dc961d73707add508a95df5c3509bd1, <=*, <314966b490323bdcfd3162a1398b00e587e0ced4, 3.7, <=5.15.*, <e2948c4232209e87c861a680f20f1e3cf8a57fec, 6.18.54, 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/740f595f8ad678cb4d79f13edd12851df2492bdd
• https://git.kernel.org/stable/c/d3641afe6ee76d852834a34ef0669eefced32752
• https://git.kernel.org/stable/c/314966b490323bdcfd3162a1398b00e587e0ced4
• https://git.kernel.org/stable/c/ae10838a7cdf0e54caa9d0a4f488704fd04e7f01
• https://git.kernel.org/stable/c/a1ff367e0dc961d73707add508a95df5c3509bd1
• https://git.kernel.org/stable/c/23383e0578b58ba2dc0730cf9f7806bd66bf859a
• https://git.kernel.org/stable/c/e2948c4232209e87c861a680f20f1e3cf8a57fec
• https://git.kernel.org/stable/c/d3a421c82412344022982d5b91ba23194a0a6f29