Detections
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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 465009

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: netfilter: nft_exthdr: fix register
 tracking for F_PRESENT flag nft_exthdr_init() passes user-controlled priv->len to
 nft_parse_register_store(), which marks that many bytes in the register bitmap as initialized. However,
 when NFT_EXTHDR_F_PRESENT is set, the eval paths write only 1 byte (nft_reg_store8) or 4 bytes (*dest = 0
 on TCP/DCCP error path). When len > 4, registers beyond the first are never written, retaining
 uninitialized stack data from nft_regs. Bail out if userspace requests too much data when F_PRESENT is
 set. (CVE-2026-53218)

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-2026-53218

Plugin Details

Severity: Medium

ID: 465009

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.7

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-2026-53218

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: 6/25/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-53218