---
cve: "CVE-2026-90216"
severity: "LOW"
cvss: 3.1
epss: "2.3%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-17 17:17:16"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T08:42:17+02:00"
---

# CVE-2026-90216

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.270
- Kernel ≥ 5.15.221
- Kernel ≥ 6.1.188
- Kernel ≥ 6.6.157
- Kernel ≥ 6.12.110
- Kernel ≥ 6.18.52
- Kernel ≥ 7.2.6

## Referenzen

- <https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893>
- <https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686>
- <https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73>
- <https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5>
- <https://git.kernel.org/stable/c/83c978921688af40dcab6db74882d1ff9b0b765c>
- <https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf>
- <https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be>
- <https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90216) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_