#VU124912 Memory corruption in Linux kernel - CVE-2026-23459
Published: April 6, 2026
Vulnerability identifier: #VU124912
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-23459
CWE-ID: CWE-119
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 attacker to cause a denial of service.
The vulnerability exists due to memory corruption in iptunnel_xmit_stats() when updating tunnel transmit statistics for vxlan or geneve traffic. A local attacker can trigger the vulnerable code path to cause a denial of service.
On 32-bit kernels, overwriting the syncp sequence could lead to corruption or system freezes.
Remediation
Install security update from vendor's repository.