CVE-2026-89441 (GCVE-0-2026-89441)
Vulnerability from cvelistv5
Published
2026-09-11 19:43
Modified
2026-10-21 12:47
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: cancel card-detect work on remove Disabling the device interrupt and freeing the IRQ prevents new card-detect work from being queued, but carddet_work already queued by the handler can still run after via_sd_remove() returns. via_sdc_card_detect() recovers the host through container_of() and dereferences its MMIO base; once remove() returns the host can be freed, so that work would touch freed memory. Cancel carddet_work after freeing the IRQ and before cancelling finish_bh_work, which the card-detect handler can also queue. carddet_work can re-enable the interrupt through via_reset_pcictrl(); mask it again afterwards. This issue was found by an in-house static analysis tool and confirmed by manual code review.
References
Impacted products
Vendor Product Version
Linux Linux Version: f0bf7f61b8405224bc52fc9a3ccd167a68126e00
Version: f0bf7f61b8405224bc52fc9a3ccd167a68126e00
Version: f0bf7f61b8405224bc52fc9a3ccd167a68126e00
Version: f0bf7f61b8405224bc52fc9a3ccd167a68126e00
Version: f0bf7f61b8405224bc52fc9a3ccd167a68126e00
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