CVE-2026-89952 (GCVE-0-2026-89952)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-10-19 08:55
VLAI
Title
mtd: rawnand: validate ONFI extended parameter page sections
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: validate ONFI extended parameter page sections nand_flash_detect_ext_param_page() allocates the length declared by the ONFI parameter page, then treats the data as a fixed header followed by variable-length sections. It reads that header and advances over sections without first proving that the fixed page and each current section fit in the allocation. Reject pages shorter than the fixed header, track the remaining variable area while walking sections, and require the ECC section to contain every field read from struct onfi_ext_ecc_info. Use device-scoped diagnostics that identify the malformed ONFI section.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < 1bf148fabe6463422195b7cc43b3412533f1dc21 (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < c7df90bbda71549bfd981bf478ad04ddfccf4e0d (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < 86948f81964e40cd6472d76a6371e4f297d84db0 (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < ddb6ddf5be7429bb98b3368c883be51f00b31678 (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < 12a63a0f0d17b2d26211b2524ded91a67dd5c99c (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < c8f86e375b39cada09fd8cb33dd3bb3641e84a62 (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < 23e747fe585830c43095c37c85b2757231c6917f (git)
Affected: 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a , < e5e415262330bd70f983e091d8919d9dcd99e475 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.12
Unaffected: 0 , < 3.12 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.51 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "dateReserved": "2026-09-11T19:38:34.777Z",
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      "cve": "CVE-2026-89952",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mtd: rawnand: validate ONFI extended parameter page sections",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89952.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-10-20T00:53:39Z",
      "cve": "CVE-2026-89952",
      "id": "CVE-2026-89952",
      "initial_release_date": "2026-09-17T16:33:49Z",
      "product_status:known_affected": "265",
      "product_status:known_not_affected": "83",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89952",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-89952.json",
      "version": "5"
    }
  }
}



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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

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