Google: sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 18867.528.3

high Tenable Cloud Security Plugin ID 467062

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: guard timestamp cmsgs to real
error queue skbs skb_is_err_queue() treats PACKET_OUTGOING as the sole marker for an skb from
sk_error_queue. That assumption is not true for AF_PACKET sockets: outgoing packet taps are also delivered
to packet sockets with skb->pkt_type == PACKET_OUTGOING, but their skb->cb is owned by AF_PACKET instead
of struct sock_exterr_skb. If such an skb is received with timestamping enabled, the generic timestamp
cmsg path can read AF_PACKET control-buffer state as sock_exterr_skb::opt_stats. With SO_RXQ_OVFL enabled,
the packet drop counter overlaps opt_stats. An odd drop count makes the path emit
SCM_TIMESTAMPING_OPT_STATS with skb->len and skb->data. For non-linear skbs this copies past the linear
head and can trigger hardened usercopy or disclose adjacent heap contents. Keep skb_is_err_queue() local
to net/socket.c, but make it verify that the PACKET_OUTGOING marker is paired with the sock_rmem_free
destructor installed by sock_queue_err_skb(). AF_PACKET receive skbs use normal receive ownership and no
longer pass as error-queue skbs, while legitimate sk_error_queue entries keep the PACKET_OUTGOING marker
and sock_rmem_free ownership. (CVE-2026-53223)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18867.528.3 or later.

Plugin Details

Severity: High

ID: 467062

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.41

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-53223

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 6/25/2026

Reference Information

CVE: CVE-2026-53223

Detections

Analytics