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CVE-2026-89952

Unknown

Last modified

CVE-2026-89952 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < 1bf148fabe6463422195b7cc43b3412533f1dc21; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < c7df90bbda71549bfd981bf478ad04ddfccf4e0d; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < 86948f81964e40cd6472d76a6371e4f297d84db0; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < ddb6ddf5be7429bb98b3368c883be51f00b31678; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < 12a63a0f0d17b2d26211b2524ded91a67dd5c99c; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < c8f86e375b39cada09fd8cb33dd3bb3641e84a62; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < 23e747fe585830c43095c37c85b2757231c6917f; >= 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a, < e5e415262330bd70f983e091d8919d9dcd99e475
LinuxLinux3.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89952?
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.
How severe is CVE-2026-89952?
Severity scoring for CVE-2026-89952 is pending analysis.
How do I fix CVE-2026-89952?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST