CVE-2023-54104
kernel: Linux kernel: Privilege escalation via out-of-bounds access in NAND flash driver
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 24, 2025
Updated · August 20, 2026
Description
A flaw was found in the Linux kernel's mtd: rawnand: fsl_upm driver. A local attacker with low privileges could exploit an off-by-one error in the fun_exec_op() function, leading to out-of-bounds memory accesses. This vulnerability could result in privilege escalation, allowing the attacker to gain elevated system access, or cause information disclosure or a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-805 · Buffer Access with Incorrect Length Value