Detections
Analytics

Echo: linux: security update to 6.1.133-1

medium Tenable Cloud Security Plugin ID 461356

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/migrate: fix shmem xarray update
 during migration A shmem folio can be either in page cache or in swap cache, but not at the same time.
 Namely, once it is in swap cache, folio->mapping should be NULL, and the folio is no longer in a shmem
 mapping. In __folio_migrate_mapping(), to determine the number of xarray entries to update,
 folio_test_swapbacked() is used, but that conflates shmem in page cache case and shmem in swap cache case.
 It leads to xarray multi-index entry corruption, since it turns a sibling entry to a normal entry during
 xas_store() (see [1] for a userspace reproduction). Fix it by only using folio_test_swapcache() to
 determine whether xarray is storing swap cache entries or not to choose the right number of xarray entries
 to update. [1] https://lore.kernel.org/linux-mm/[email protected]/ Note: In
 __split_huge_page(), folio_test_anon() && folio_test_swapcache() is used to get swap_cache address space,
 but that ignores the shmem folio in swap cache case. It could lead to NULL pointer dereferencing when a
 in-swap-cache shmem folio is split at __xa_store(), since !folio_test_anon() is true and folio->mapping is
 NULL. But fortunately, its caller split_huge_page_to_list_to_order() bails out early with EBUSY when
 folio->mapping is NULL. So no need to take care of it here. (CVE-2025-22015)

Solution

Update the linux library and its related packages to version 6.1.133-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-22015

Plugin Details

Severity: Medium

ID: 461356

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

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-2025-22015

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

Patch Publication Date: 1/28/2026

Vulnerability Publication Date: 4/8/2025

Reference Information

CVE: CVE-2025-22015