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ubi: Fix rollback for explicit UBI device numbers

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-90216

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90216

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "83c978921688af40dcab6db74882d1ff9b0b765c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "4417ab6ecad01cf2d01045ef8104c95a66b0e893",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "552e565ed8846e7db143e4a6bdf3f5677453c686",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "9754f049d5f1945d4c691d1f52824eb8daf8f9be",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "e3f7e58189bc222971ddc860f1716f37e51ba996",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "87b3da4acb860605643ebee312178f13b20744cf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "83ff59a066637a6c28844bbf43009459408240f4",
        "lessThan": "5b0a6b554e12a97f9771a9a9f4ea1f5457373c73",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/mtd/ubi/build.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.11"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.11",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/mtd/ubi/build.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90216

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36587 · Revision 1
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Publisher date
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