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 18867.584.3

high Tenable Cloud Security Plugin ID 467365

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: seg6: validate SRH length before
reading fixed fields seg6_validate_srh() reads fixed SRH fields such as srh->type and srh->hdrlen before
checking that the supplied length covers the fixed struct ipv6_sr_hdr fields. The BPF SEG6 encap path
reaches this with a BPF program-supplied pointer and length: bpf_lwt_push_encap() and the SEG6 local BPF
END_B6 and END_B6_ENCAP actions call bpf_push_seg6_encap(), which forwards the length to
seg6_validate_srh() with no minimum-size guard. A 2-byte SEG6 encap header can therefore make the
validator read srh->type at offset 2 beyond the caller-supplied buffer. Reject lengths shorter than the
fixed SRH at the top of seg6_validate_srh(), before any field is read. This fixes the BPF helper path and
keeps the common validator robust. (CVE-2026-72400)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18867.584.3 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-121.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 467365

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.17

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-72400

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 8/11/2026

Reference Information

CVE: CVE-2026-72400