Vulnerability 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.
References
- https://git.kernel.org/stable/c/12a63a0f0d17b2d26211b2524ded91a67dd5c99c
- https://git.kernel.org/stable/c/1bf148fabe6463422195b7cc43b3412533f1dc21
- https://git.kernel.org/stable/c/23e747fe585830c43095c37c85b2757231c6917f
- https://git.kernel.org/stable/c/86948f81964e40cd6472d76a6371e4f297d84db0
- https://git.kernel.org/stable/c/c7df90bbda71549bfd981bf478ad04ddfccf4e0d
- https://git.kernel.org/stable/c/c8f86e375b39cada09fd8cb33dd3bb3641e84a62
- https://git.kernel.org/stable/c/ddb6ddf5be7429bb98b3368c883be51f00b31678
- https://git.kernel.org/stable/c/e5e415262330bd70f983e091d8919d9dcd99e475
FAQ
What is CVE-2026-89952?
CVE-2026-89952 is a documented vulnerability. 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 t...
How severe is CVE-2026-89952?
CVSS scoring is not yet available for CVE-2026-89952. Check NVD for updates.
Is there a patch for CVE-2026-89952?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.