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 19216.532.108

high Tenable Self-Hosted Container Security Plugin ID 468727

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: iomap: fix out-of-bounds bitmap_set()
with zero-length range ifs_set_range_dirty() and ifs_set_range_uptodate() compute last_blk as (off + len -
1) >> i_blkbits. When off is 0 and len is 0, the unsigned subtraction underflows to SIZE_MAX, producing a
huge last_blk and nr_blks value that causes bitmap_set() to write far beyond the ifs->state allocation.
Regarding ifs_set_range_uptodate(), it is temporarily safe because len cannot be passed in as 0. However,
for ifs_set_range_dirty() this is reachable from __iomap_write_end(): when copy_folio_from_iter_atomic()
returns 0 (e.g. user buffer fault) and the folio is already uptodate, the guard at the top of
__iomap_write_end() does not trigger because !folio_test_uptodate() is false, and iomap_set_range_dirty()
is called with copied == 0. Add a !len guard to both functions before the computation, so that a zero-
length range is a no-op. (CVE-2026-68145)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.108 or later.

Plugin Details

Severity: High

ID: 468727

Version: Revision 1.5

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: 6.9

Percentile: 96.56

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-2026-68145

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: 8/10/2026

Reference Information

CVE: CVE-2026-68145

Detections

Analytics