CVE-2026-89441

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mmc: via-sdmmc: cancel card-detect work on remove<br /> <br /> Disabling the device interrupt and freeing the IRQ prevents new card-detect<br /> work from being queued, but carddet_work already queued by the handler can<br /> still run after via_sd_remove() returns. via_sdc_card_detect() recovers the<br /> host through container_of() and dereferences its MMIO base; once remove()<br /> returns the host can be freed, so that work would touch freed memory.<br /> <br /> Cancel carddet_work after freeing the IRQ and before cancelling<br /> finish_bh_work, which the card-detect handler can also queue. carddet_work<br /> can re-enable the interrupt through via_reset_pcictrl(); mask it again<br /> afterwards.<br /> <br /> This issue was found by an in-house static analysis tool and confirmed by<br /> manual code review.