Out-of-bounds write in Linux kernel - CVE-2026-90083
Published: September 19, 2026
Vulnerability identifier: #VU151404
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-2026-90083
CWE-ID: CWE-787
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 incorrect Ethernet header length handling in the Linux kernel IFE traffic-control action when processing a packet redirected from a non-Ethernet device to an Ethernet device at traffic-control ingress. A local user can redirect a packet to an Ethernet device with an IFE action on its ingress hook to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90083
Install security update from vendor's repository.