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Echo: linux: security update to 6.1.164-1

high Tenable Cloud Security Plugin ID 462076

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: f2fs: fix out-of-bounds access in
 sysfs attribute read/write Some f2fs sysfs attributes suffer from out-of-bounds memory access and
 incorrect handling of integer values whose size is not 4 bytes. For example: vm:~# echo 65537 >
 /sys/fs/f2fs/vde/carve_out vm:~# cat /sys/fs/f2fs/vde/carve_out 65537 vm:~# echo 4294967297 >
 /sys/fs/f2fs/vde/atgc_age_threshold vm:~# cat /sys/fs/f2fs/vde/atgc_age_threshold 1 carve_out maps to
 {struct f2fs_sb_info}->carve_out, which is a 8-bit integer. However, the sysfs interface allows setting it
 to a value larger than 255, resulting in an out-of-range update. atgc_age_threshold maps to {struct
 atgc_management}->age_threshold, which is a 64-bit integer, but its sysfs interface cannot correctly set
 values larger than UINT_MAX. The root causes are: 1. __sbi_store() treats all default values as unsigned
 int, which prevents updating integers larger than 4 bytes and causes out-of-bounds writes for integers
 smaller than 4 bytes. 2. f2fs_sbi_show() also assumes all default values are unsigned int, leading to out-
 of-bounds reads and incorrect access to integers larger than 4 bytes. This patch introduces {struct
 f2fs_attr}->size to record the actual size of the integer associated with each sysfs attribute. With this
 information, sysfs read and write operations can correctly access and update values according to their
 real data size, avoiding memory corruption and truncation. (CVE-2026-23235)

Solution

Update the linux library and its related packages to version 6.1.164-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-23235

Plugin Details

Severity: High

ID: 462076

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.46

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-23235

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 3/23/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-23235