CVE-2026-89952
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.
How to fix
- Linux Linux1bf148fabe6463422195b7cc43b3412533f1dc21, c7df90bbda71549bfd981bf478ad04ddfccf4e0d, 86948f81964e40cd6472d76a6371e4f297d84db0, ddb6ddf5be7429bb98b3368c883be51f00b31678, 12a63a0f0d17b2d26211b2524ded91a67dd5c99c, c8f86e375b39cada09fd8cb33dd3bb3641e84a62, 23e747fe585830c43095c37c85b2757231c6917f, e5e415262330bd70f983e091d8919d9dcd99e475 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < 1bf148fabe6463422195b7cc43b3412533f1dc21, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < c7df90bbda71549bfd981bf478ad04ddfccf4e0d, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < 86948f81964e40cd6472d76a6371e4f297d84db0, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < ddb6ddf5be7429bb98b3368c883be51f00b31678, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < 12a63a0f0d17b2d26211b2524ded91a67dd5c99c, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < c8f86e375b39cada09fd8cb33dd3bb3641e84a62, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < 23e747fe585830c43095c37c85b2757231c6917f, 6dcbe0cdd83fb5f77be4f44c9e06c535281c375a ≤ v < e5e415262330bd70f983e091d8919d9dcd99e475, 3.12 | 1bf148fabe6463422195b7cc43b3412533f1dc21, c7df90bbda71549bfd981bf478ad04ddfccf4e0d, 86948f81964e40cd6472d76a6371e4f297d84db0, ddb6ddf5be7429bb98b3368c883be51f00b31678, 12a63a0f0d17b2d26211b2524ded91a67dd5c99c, c8f86e375b39cada09fd8cb33dd3bb3641e84a62, 23e747fe585830c43095c37c85b2757231c6917f, e5e415262330bd70f983e091d8919d9dcd99e475 |
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