CVE-2026-90160
kernel: lwt_bpf: Restore reserved headroom after xmit program
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 13, 2026
Description
A flaw was found in the Linux kernel's Lightweight Tunnel BPF (lwt_bpf) component. An attacker, by using a specially crafted BPF program, could cause an insufficient headroom condition after the program modifies the socket buffer (skb) head. This can lead to the kernel dropping network packets, resulting in a Denial of Service (DoS) for affected network traffic.
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-131 · Incorrect Calculation of Buffer Size