Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19216.700.7

high Tenable Self-Hosted Container Security Plugin ID 469178

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: iommu/vt-d: Tear down scalable-mode
context on probe failure intel_pasid_setup_sm_context() walks a PCI device’s DMA aliases via
pci_for_each_dma_alias() and programs a scalable-mode context entry for each RID. For a device with a
dma_alias_mask, the callback is invoked once for the device’s own RID and once for each alias bit, all
with the same pci_dev, so device_pasid_table_setup() runs for multiple RIDs. pci_for_each_dma_alias()
stops at the first callback error. Therefore, a failure partway through the walk can leave context entries
for already processed RIDs present and still pointing to the device’s PASID table. On this error path,
intel_iommu_probe_device() currently jumps directly to intel_pasid_free_table(), which frees the PASID
table without first tearing down those context entries. The IOMMU may then walk a present context entry
whose PASID table pointer references freed memory. intel_iommu_release_device() already performs teardown
before freeing the table. Apply the same ordering on the probe failure path. device_pasid_table_teardown()
safely handles RIDs that were never programmed: iommu_context_addr() returns NULL when no context table
has been allocated, and clearing the Present bit of an already non-present entry is a no-op. So unwind is
safe for both the alias that failed and any aliases not yet reached. (CVE-2026-90241)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.700.7 or later.

Plugin Details

Severity: High

ID: 469178

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: 5

Percentile: 93.3

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2026-90241

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/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: 9/17/2026

Reference Information

CVE: CVE-2026-90241

Detections

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