#VU124497 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') in Linux kernel - CVE-2026-23354
Published: March 25, 2026
Vulnerability identifier: #VU124497
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23354
CWE-ID: CWE-470
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to improper bounds checking in the x86/fred component when handling speculative execution of interrupts. A local user can trigger a use of an out-of-bounds array index during interrupt handling to execute arbitrary code.
The issue arises because the array index is spilled to the stack before use, making it vulnerable to speculative execution attacks.
Remediation
Install security update from vendor's repository.