CVE-2026-89556
kernel: module: validate string table section types
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 11, 2026
Updated · September 29, 2026
Description
A flaw was found in the Linux kernel. This vulnerability arises from insufficient validation of string table section types within ELF (Executable and Linkable Format) files. A local attacker could exploit this by providing a specially crafted ELF module, leading to the kernel attempting to access memory outside of its allocated boundaries. This out-of-bounds memory access could result in system instability, causing a denial of service, or potentially lead to the disclosure of sensitive information.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-125 · Out-of-bounds Read