CVE-2026-89441

CVE CVE-2026-89441EUVD EUVD-2026-76347Published 2026-09-11T19:43:10.000ZLast changed 2026-09-13T06:29:23.000ZCVSS 7.8

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux f0bf7f61b8405224bc52fc9a3ccd167a68126e00 <57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5; f0bf7f61b8405224bc52fc9a3ccd167a68126e00 <f7ff3027ef004a331ef911a4886f12bc2e996037; 2.6.31; patch: 7.2.4; f0bf7f61b8405224bc52fc9a3ccd167a68126e00 <eaca730c6f5e3609df62a0469fb789235a93d276; patch: 0; patch: 6.18.50; patch: 7.3-rc1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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