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Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 464117

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: ext4: validate p_idx bounds in
 ext4_ext_correct_indexes ext4_ext_correct_indexes() walks up the extent tree correcting index entries when
 the first extent in a leaf is modified. Before accessing path[k].p_idx->ei_block, there is no validation
 that p_idx falls within the valid range of index entries for that level. If the on-disk extent header
 contains a corrupted or crafted eh_entries value, p_idx can point past the end of the allocated buffer,
 causing a slab-out-of-bounds read. Fix this by validating path[k].p_idx against EXT_LAST_INDEX() at both
 access sites: before the while loop and inside it. Return -EFSCORRUPTED if the index pointer is out of
 range, consistent with how other bounds violations are handled in the ext4 extent tree code.
 (CVE-2026-31449)

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-2026-31449

Plugin Details

Severity: High

ID: 464117

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.61

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-31449

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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: 5/1/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-31449