Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.532.96

high Tenable Self-Hosted Container Security Plugin ID 469522

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: net, bpf: check master for NULL in
xdp_master_redirect() xdp_master_redirect() dereferences the result of netdev_master_upper_dev_get_rcu()
without a NULL check, but that helper returns NULL when the receiving device has no upper-master
adjacency. The reach guard only checks netif_is_bond_slave(). On bond slave release
bond_upper_dev_unlink() drops the upper-master adjacency before clearing IFF_SLAVE, so an XDP_TX reaching
xdp_master_redirect() in that window still passes netif_is_bond_slave() while master is already NULL, and
faults on master->flags at offset 0xb0: BUG: kernel NULL pointer dereference, address: 00000000000000b0
RIP: 0010:xdp_master_redirect (net/core/filter.c:4432) Call Trace: xdp_master_redirect
(net/core/filter.c:4432) bpf_prog_run_generic_xdp (include/net/xdp.h:700) do_xdp_generic
(net/core/dev.c:5608) __netif_receive_skb_one_core (net/core/dev.c:6204) process_backlog
(net/core/dev.c:6319) __napi_poll (net/core/dev.c:7729) net_rx_action (net/core/dev.c:7792)
handle_softirqs (kernel/softirq.c:622) __dev_queue_xmit (include/linux/bottom_half.h:33) packet_sendmsg
(net/packet/af_packet.c:3082) __sys_sendto (net/socket.c:2252) Kernel panic - not syncing: Fatal exception
in interrupt The missing check dates back to the original code; commit 1921f91298d1 ("net, bpf: fix null-
ptr-deref in xdp_master_redirect() for down master") later added the master->flags read where the fault
now lands but kept the unconditional deref. Check master for NULL before use; a NULL master is treated the
same as one that is not up. (CVE-2026-64545)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.96 or later.

Plugin Details

Severity: High

ID: 469522

Version: Revision 1.6

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: Medium

Score: 5

Percentile: 93.17

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-2026-64545

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: 7/27/2026

Reference Information

CVE: CVE-2026-64545

Detections

Analytics