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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 462333

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: nilfs2: fix NULL i_assoc_inode
 dereference in nilfs_mdt_save_to_shadow_map The DAT inode's btree node cache (i_assoc_inode) is
 initialized lazily during btree operations. However, nilfs_mdt_save_to_shadow_map() assumes i_assoc_inode
 is already initialized when copying dirty pages to the shadow map during GC. If NILFS_IOCTL_CLEAN_SEGMENTS
 is called immediately after mount before any btree operation has occurred on the DAT inode, i_assoc_inode
 is NULL leading to a general protection fault. Fix this by calling nilfs_attach_btree_node_cache() on the
 DAT inode in nilfs_dat_read() at mount time, ensuring i_assoc_inode is always initialized before any GC
 operation can use it. (CVE-2026-31577)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-31577

Plugin Details

Severity: Medium

ID: 462333

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.65

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-2026-31577

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: 5/1/2026

Vulnerability Publication Date: 4/24/2026

Reference Information

CVE: CVE-2026-31577