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Echo: linux: security update to 6.1.135-1

medium Tenable Cloud Security Plugin ID 461562

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: fs/jfs: Prevent integer overflow in AG
 size calculation The JFS filesystem calculates allocation group (AG) size using 1 << l2agsize in
 dbExtendFS(). When l2agsize exceeds 31 (possible with >2TB aggregates on 32-bit systems), this 32-bit
 shift operation causes undefined behavior and improper AG sizing. On 32-bit architectures: - Left-shifting
 1 by 32+ bits results in 0 due to integer overflow - This creates invalid AG sizes (0 or garbage values)
 in sbi->bmap->db_agsize - Subsequent block allocations would reference invalid AG structures - Could lead
 to: - Filesystem corruption during extend operations - Kernel crashes due to invalid memory accesses -
 Security vulnerabilities via malformed on-disk structures Fix by casting to s64 before shifting:
 bmp->db_agsize = (s64)1 << l2agsize; This ensures 64-bit arithmetic even on 32-bit architectures. The cast
 matches the data type of db_agsize (s64) and follows similar patterns in JFS block calculation code. Found
 by Linux Verification Center (linuxtesting.org) with SVACE. (CVE-2025-37858)

Solution

Update the linux library and its related packages to version 6.1.135-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-37858

Plugin Details

Severity: Medium

ID: 461562

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.24

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-2025-37858

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: 9/15/2025

Vulnerability Publication Date: 5/5/2025

Reference Information

CVE: CVE-2025-37858