High 7.8Published Sep 11, 2026

CVE-2026-89441mmc: via-sdmmc: cancel card-detect work on remove

Updated under an hour ago (2026-10-19 06:10 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f0bf7f61b8405224bc52fc9a3ccd167a68126e00 before 0a3c70191868fb007c03ff79693ad4e4b3fdcbb8; from f0bf7f61b8405224bc52fc9a3ccd167a68126e00 before f7ff3027ef004a331ef911a4886f12bc2e996037; from f0bf7f61b8405224bc52fc9a3ccd167a68126e00 before eaca730c6f5e3609df62a0469fb789235a93d276; from f0bf7f61b8405224bc52fc9a3ccd167a68126e00 before 57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5	CNA record

References

https://git.kernel.org/stable/c/0a3c70191868fb007c03ff79693ad4e4b3fdcbb8
https://git.kernel.org/stable/c/f7ff3027ef004a331ef911a4886f12bc2e996037
https://git.kernel.org/stable/c/eaca730c6f5e3609df62a0469fb789235a93d276
https://git.kernel.org/stable/c/57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.