Google: sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6: security update to 19216.104.3

high Tenable Self-Hosted Container Security Plugin ID 468891

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- In the Linux kernel, the following vulnerability has been resolved: bpf: Fix metadata_dst leak
__bpf_redirect_neigh_v{4,6} Cilium has a BPF egress gateway feature which forces outgoing K8s Pod traffic
to pass through dedicated egress gateways which then SNAT the traffic in order to interact with stable IPs
outside the cluster. The traffic is directed to the gateway via vxlan tunnel in collect md mode. A recent
BPF change utilized the bpf_redirect_neigh() helper to forward packets after the arrival and decap on
vxlan, which turned out over time that the kmalloc-256 slab usage in kernel was ever-increasing. The issue
was that vxlan allocates the metadata_dst object and attaches it through a fake dst entry to the skb. The
latter was never released though given bpf_redirect_neigh() was merely setting the new dst entry via
skb_dst_set() without dropping an existing one first. (CVE-2025-40183)

Solution

Update the sys-kernel/csql-kernel-6_12 library and its related packages to version 19216.104.3 or later.

Plugin Details

Severity: High

ID: 468891

Version: Revision 1.4

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2025-40183

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/23/2025

Reference Information

CVE: CVE-2025-40183

Detections

Analytics