Detections
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Echo: linux: security update to 6.1.133-1

medium Tenable Cloud Security Plugin ID 458599

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: wifi: nl80211: reject cooked mode if
 it is set along with other flags It is possible to set both MONITOR_FLAG_COOK_FRAMES and
 MONITOR_FLAG_ACTIVE flags simultaneously on the same monitor interface from the userspace. This causes a
 sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit set because the monitor interface is in
 the cooked state and it takes precedence over all other states. When the interface is then being deleted
 the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing that bit. Fix this by
 rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with other flags. Found by Linux Verification Center
 (linuxtesting.org) with Syzkaller. (CVE-2025-21909)

Solution

Update the linux library and its related packages to version 6.1.133-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-21909

Plugin Details

Severity: Medium

ID: 458599

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

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-2025-21909

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: 1/28/2026

Vulnerability Publication Date: 3/20/2025

Reference Information

CVE: CVE-2025-21909