CVE-2023-54104: Linux

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op() 'op-cs' is copied in 'fun->mchip_number' which is used to access the 'mchip_offsets' and the 'rnb_gpio' arrays. These arrays have NAND_MAX_CHIPS elements, so the index must be below this limit. Fix the sanity check in order to avoid the NAND_MAX_CHIPS value. This would lead to out-of-bound accesses.

Affected products

• Linux Linux: from 5.9, before 5.10.190 (fixed in 5.10.190); from 5.11, before 5.15.126 (fixed in 5.15.126); from 5.16, before 6.1.45 (fixed in 6.1.45); from 6.2, before 6.4.10 (fixed in 6.4.10)

Published 2025-12-24. Last modified 2026-08-04.