CVE-2026-90216ubi: Fix rollback for explicit UBI device numbers
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- 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
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 83ff59a066637a6c28844bbf43009459408240f4 builds before 83c978921688af40dcab6db74882d1ff9b0b765c; 83ff59a066637a6c28844bbf43009459408240f4 builds before 6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5; from 83ff59a066637a6c28844bbf43009459408240f4 before 4417ab6ecad01cf2d01045ef8104c95a66b0e893; from 83ff59a066637a6c28844bbf43009459408240f4 before 552e565ed8846e7db143e4a6bdf3f5677453c686; from 83ff59a066637a6c28844bbf43009459408240f4 before 9754f049d5f1945d4c691d1f52824eb8daf8f9be; from 83ff59a066637a6c28844bbf43009459408240f4 before e3f7e58189bc222971ddc860f1716f37e51ba996; from 83ff59a066637a6c28844bbf43009459408240f4 before 87b3da4acb860605643ebee312178f13b20744cf; 83ff59a066637a6c28844bbf43009459408240f4 builds before 5b0a6b554e12a97f9771a9a9f4ea1f5457373c73 | CNA record |
References
- https://git.kernel.org/stable/c/83c978921688af40dcab6db74882d1ff9b0b765c
- https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5
- https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893
- https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686
- https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be
- https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996
- https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf
- https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73
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.