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Echo: linux: security update to 6.1.187-1

high Tenable Self-Hosted Container Security Plugin ID 463856

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: exfat: validate cluster allocation
 bits of the allocation bitmap syzbot created an exfat image with cluster bits not set for the allocation
 bitmap. exfat-fs reads and uses the allocation bitmap without checking this. The problem is that if the
 start cluster of the allocation bitmap is 6, cluster 6 can be allocated when creating a directory with
 mkdir. exfat zeros out this cluster in exfat_mkdir, which can delete existing entries. This can reallocate
 the allocated entries. In addition, the allocation bitmap is also zeroed out, so cluster 6 can be
 reallocated. This patch adds exfat_test_bitmap_range to validate that clusters used for the allocation
 bitmap are correctly marked as in-use. (CVE-2025-40307)

Solution

Update the linux library and its related packages to version 6.1.187-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-40307

Plugin Details

Severity: High

ID: 463856

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.12

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-2025-40307

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

Patch Publication Date: 12/8/2025

Vulnerability Publication Date: 12/8/2025

Reference Information

CVE: CVE-2025-40307