Google: sys-kernel/csql-kernel-6_1, sys-kernel/lakitu-kernel-6_1: security update to 18244.448.6

medium Tenable Cloud Security Plugin ID 450851

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: mm/huge_memory: fix dereferencing
invalid pmd migration entry When migrating a THP, concurrent access to the PMD migration entry during a
deferred split scan can lead to an invalid address access, as illustrated below. To prevent this invalid
access, it is necessary to check the PMD migration entry and return early. In this context, there is no
need to use pmd_to_swp_entry and pfn_swap_entry_to_page to verify the equality of the target folio. Since
the PMD migration entry is locked, it cannot be served as the target. Mailing list discussion and
explanation from Hugh Dickins: "An anon_vma lookup points to a location which may contain the folio of
interest, but might instead contain another folio: and weeding out those other folios is precisely what
the "folio != pmd_folio((*pmd)" check (and the "risk of replacing the wrong folio" comment a few lines
above it) is for." BUG: unable to handle page fault for address: ffffea60001db008 CPU: 0 UID: 0 PID:
2199114 Comm: tee Not tainted 6.14.0+ #4 NONE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:split_huge_pmd_locked+0x3b5/0x2b60 Call Trace: <TASK>
try_to_migrate_one+0x28c/0x3730 rmap_walk_anon+0x4f6/0x770 unmap_folio+0x196/0x1f0
split_huge_page_to_list_to_order+0x9f6/0x1560 deferred_split_scan+0xac5/0x12a0
shrinker_debugfs_scan_write+0x376/0x470 full_proxy_write+0x15c/0x220 vfs_write+0x2fc/0xcb0
ksys_write+0x146/0x250 do_syscall_64+0x6a/0x120 entry_SYSCALL_64_after_hwframe+0x76/0x7e The bug is found
by syzkaller on an internal kernel, then confirmed on upstream. (CVE-2025-37958)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18244.448.6 or later.

Plugin Details

Severity: Medium

ID: 450851

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-37958

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/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: 5/20/2025

Reference Information

CVE: CVE-2025-37958

Detections

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