Out-of-bounds read in Linux kernel - CVE-2026-89952
Published: September 17, 2026
Vulnerability identifier: #VU150334
CSH Severity: Low
CVSS v4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89952
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to read beyond allocated memory.
The vulnerability exists due to an out-of-bounds read in nand_flash_detect_ext_param_page() when parsing an ONFI extended parameter page with invalid section lengths. An attacker with physical access can supply a malformed ONFI extended parameter page to read beyond allocated memory.
Affected software
Linux kernel
How to mitigate CVE-2026-89952
Install security update from vendor's repository.
External 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