CVE-2026-98211

Summary

In the Linux kernel, the following vulnerability has been resolved:

mmc: mmci: Fix use-after-free in busy-timeout work

ux500_busy_complete() can queue ux500_busy_timeout_work for an R1b command, but mmci_remove() never cancels it. The work can subsequently dereference the devm-allocated mmci_host after it has been released.

Mask the controller interrupts and disable the delayed work during removal. This drains any queued instance and stops an IRQ handler that is still in progress from queueing the work again once it has been disabled.

This issue was found by an in-house static analysis tool.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb1a665932dc23cad0b8af2745cd9713f9e930d63 < af6fbf72e899932f330c4e5d0b84d985c922c633affected
LinuxLinuxb1a665932dc23cad0b8af2745cd9713f9e930d63 < 7fecf79f31568de161be14911db10d1251617b01affected
LinuxLinuxb1a665932dc23cad0b8af2745cd9713f9e930d63 < 432b98c1f5daecf04a33c8e1688d26e7ac221e23affected
LinuxLinuxb1a665932dc23cad0b8af2745cd9713f9e930d63 < 2b19cf3e50cddaff07b657dae1a8f30f06032852affected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.12.112 <= 6.12.*unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References