CVE-2026-89952
mtd: rawnand: validate ONFI extended parameter page sections
Description
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.
INFO
Published Date :
Sept. 16, 2026, 11:17 a.m.
Last Modified :
Sept. 16, 2026, 11:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the mtd: rawnand: validate ONFI extended parameter page sections patch.
- Validate page lengths against the declared ONFI parameter page.
- Track variable area and ensure sections fit within allocation.
- Require ECC section to contain all fields from struct onfi_ext_ecc_info.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-89952.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-89952 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-89952
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-89952 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89952 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added Description 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89952.json">CVE-2026-89952</a> Added Reference https://git.kernel.org/stable/c/12a63a0f0d17b2d26211b2524ded91a67dd5c99c Added Reference https://git.kernel.org/stable/c/1bf148fabe6463422195b7cc43b3412533f1dc21 Added Reference https://git.kernel.org/stable/c/23e747fe585830c43095c37c85b2757231c6917f Added Reference https://git.kernel.org/stable/c/86948f81964e40cd6472d76a6371e4f297d84db0 Added Reference https://git.kernel.org/stable/c/c7df90bbda71549bfd981bf478ad04ddfccf4e0d Added Reference https://git.kernel.org/stable/c/c8f86e375b39cada09fd8cb33dd3bb3641e84a62 Added Reference https://git.kernel.org/stable/c/ddb6ddf5be7429bb98b3368c883be51f00b31678 Added Reference https://git.kernel.org/stable/c/e5e415262330bd70f983e091d8919d9dcd99e475