FKIE_CVE-2026-90216

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/83c978921688af40dcab6db74882d1ff9b0b765c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/ubi/build.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "83c978921688af40dcab6db74882d1ff9b0b765c",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "4417ab6ecad01cf2d01045ef8104c95a66b0e893",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "552e565ed8846e7db143e4a6bdf3f5677453c686",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "9754f049d5f1945d4c691d1f52824eb8daf8f9be",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "e3f7e58189bc222971ddc860f1716f37e51ba996",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "87b3da4acb860605643ebee312178f13b20744cf",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            },
            {
              "lessThan": "5b0a6b554e12a97f9771a9a9f4ea1f5457373c73",
              "status": "affected",
              "version": "83ff59a066637a6c28844bbf43009459408240f4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/ubi/build.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.11"
            },
            {
              "lessThan": "3.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix rollback for explicit UBI device numbers\n\nubi_init_attach() rolls back module initialization failures by scanning\nubi_devices[0..i-1], where i is the mtd= parameter index. That assumes\nthe parameter index matches the UBI device number.\n\nThat assumption is not true when mtd= specifies an explicit ubi_num. A\nsuccessfully attached device can be stored at a higher ubi_devices[]\nslot, and a later failure can miss it during rollback.\n\nScan the full ubi_devices[] array and detach by the actual array index,\nmatching the way UBI devices are stored."
    }
  ],
  "id": "CVE-2026-90216",
  "lastModified": "2026-09-17T17:17:16.900",
  "metrics": {},
  "published": "2026-09-17T17:17:16.900",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4417ab6ecad01cf2d01045ef8104c95a66b0e893"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/552e565ed8846e7db143e4a6bdf3f5677453c686"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5b0a6b554e12a97f9771a9a9f4ea1f5457373c73"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6b92e66ec6dd8019e8efb2a568ef7c967c5a18c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/83c978921688af40dcab6db74882d1ff9b0b765c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/87b3da4acb860605643ebee312178f13b20744cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9754f049d5f1945d4c691d1f52824eb8daf8f9be"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e3f7e58189bc222971ddc860f1716f37e51ba996"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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