Integer overflow in Linux kernel - CVE-2026-97906
Published: September 28, 2026
Vulnerability identifier: #VU152574
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97906
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to integer overflow in get_boot_config_from_initrd() when processing a crafted initrd bootconfig. A local user can supply a crafted initrd with a huge bootconfig size to cause a denial of service.
The issue can trigger during early boot on 32-bit systems; 64-bit systems are also affected when the initrd exceeds 4.29 GB.
Affected software
Linux kernel
How to mitigate CVE-2026-97906
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3