Google: sys-kernel/csql-kernel-6_1, sys-kernel/csql-kernel-6_6: security update to 18613.439.2

medium Tenable Self-Hosted Container Security Plugin ID 465641

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/amd/pgtbl: Fix possible race
while increase page table level The AMD IOMMU host page table implementation supports dynamic page table
levels (up to 6 levels), starting with a 3-level configuration that expands based on IOVA address. The
kernel maintains a root pointer and current page table level to enable proper page table walks in
alloc_pte()/fetch_pte() operations. The IOMMU IOVA allocator initially starts with 32-bit address and
onces its exhuasted it switches to 64-bit address (max address is determined based on IOMMU and device DMA
capability). To support larger IOVA, AMD IOMMU driver increases page table level. But in unmap path
(iommu_v1_unmap_pages()), fetch_pte() reads pgtable->[root/mode] without lock. So its possible that in
exteme corner case, when increase_address_space() is updating pgtable->[root/mode], fetch_pte() reads
wrong page table level (pgtable->mode). It does compare the value with level encoded in page table and
returns NULL. This will result is iommu_unmap ops to fail and upper layer may retry/log WARN_ON. CPU 0 CPU
1 ------ ------ map pages unmap pages alloc_pte() -> increase_address_space() iommu_v1_unmap_pages() ->
fetch_pte() pgtable->root = pte (new root value) READ pgtable->[mode/root] Reads new root, old mode
Updates mode (pgtable->mode += 1) Since Page table level updates are infrequent and already synchronized
with a spinlock, implement seqcount to enable lock-free read operations on the read path. (CVE-2025-39961)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18613.439.2 or later.

Plugin Details

Severity: Medium

ID: 465641

Version: Revision 1.2

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: Low

Score: 3

Percentile: 23.42

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2025-39961

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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: 10/9/2025

Reference Information

CVE: CVE-2025-39961

Detections

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