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Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 457304

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: inotify: fix watch count leak when
 fsnotify_add_inode_mark_locked() fails When fsnotify_add_inode_mark_locked() fails in inotify_new_watch(),
 the error path calls inotify_remove_from_idr() but does not call dec_inotify_watches() to undo the
 preceding inc_inotify_watches(). This leaks a watch count, and repeated failures can exhaust the
 max_user_watches limit with -ENOSPC even when no watches are active. Prior to commit 1cce1eea0aff
 ("inotify: Convert to using per-namespace limits"), the watch count was incremented after
 fsnotify_add_mark_locked() succeeded, so this path was not affected. The conversion moved
 inc_inotify_watches() before the mark insertion without adding the corresponding rollback. Add the missing
 dec_inotify_watches() call in the error path. (CVE-2026-46040)

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-2026-46040

Plugin Details

Severity: Medium

ID: 457304

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

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-2026-46040

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: 5/28/2026

Vulnerability Publication Date: 5/26/2026

Reference Information

CVE: CVE-2026-46040