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THREAT OPS › Threat News › [NVD] CVE-2026-89440 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: stop card-detect handling on probe failure request_irq() registers the SD card-detect interrupt and the probe enables it before mmc_add_host() runs. If mmc_add_host() fails, the error path only

[NVD] CVE-2026-89440 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: stop card-detect handling on probe failure request_irq() registers the SD card-detect interrupt and the probe enables it before mmc_add_host() runs. If mmc_add_host() fails, the error path only

mednvdPublished 2026-09-11

CVE-2026-89440 CVSS: 7.8 HIGH Published: 2026-09-11T20:19:24.330

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

mmc: via-sdmmc: stop card-detect handling on probe failure

request_irq() registers the SD card-detect interrupt and the probe enables it before mmc_add_host() runs. If mmc_add_host() fails, the error path only unmaps the registers and returns: the interrupt stays

Indicators of compromise

CVE-2026-89440cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-89440