CVE-2026-89440High· 7.0▾ TwilightA flaw was found in the Linux kernel's mmc: via-sdmmc component. During the probe process, if the `mmc_add_host()` function fails, the SD card-detect interrupt handler continues to operate on memory that has already been released. This can…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 5.8
none → medium
— → 5.8
none → medium
— → 7.8
none → high
Last analysed / modified upstream
7.8 → 5.8
high → medium
7.8 → 7
A flaw was found in the Linux kernel's mmc: via-sdmmc component. During the probe process, if the mmc_add_host() function fails, the SD card-detect interrupt handler continues to operate on memory that has already been released. This can lead to memory corruption, potentially allowing a local attacker to cause system instability or execute unauthorized code.
kernel: mmc: via-sdmmc: stop card-detect handling on probe failure — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Out of support scope
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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