EUVD-2026-81809
GHSA-98x6-774g-8659
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2DescriptionCVE.org
In the Linux kernel, the following vulnerability has been resolved:
ubi: Fix rollback for explicit UBI device numbers
ubi_init_attach() rolls back module initialization failures by scanning ubi_devices[0..i-1], where i is the mtd= parameter index. That assumes the parameter index matches the UBI device number.
That assumption is not true when mtd= specifies an explicit ubi_num. A successfully attached device can be stored at a higher ubi_devices[] slot, and a later failure can miss it during rollback.
Scan the full ubi_devices[] array and detach by the actual array index, matching the way UBI devices are stored.
Analysis
In the Linux kernel, the following vulnerability has been resolved: ubi: Fix rollback for explicit UBI device numbers ubi_init_attach() rolls back module initialization failures by scanning ubi_devices[0..i-1], where i is the mtd= parameter index. That assumes the parameter index matches the UBI device number. …
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