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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 464355

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: ipv4: restrict IPOPT_SSRR and
 IPOPT_LSRR options This patch restricts setting Loose Source and Record Route (LSRR) and Strict Source and
 Record Route (SSRR) IP options to users with CAP_NET_RAW capability. This prevents unprivileged
 applications from forcing packets to route through attacker-controlled nodes to leak TCP ISN and possibly
 other protocol information. While LSRR and SSRR are commonly filtered in many network environments, they
 may still be supported and forwarded along some network paths. RFC 7126 (Recommendations on Filtering of
 IPv4 Packets Containing IPv4 Options) recommend to drop these options in 4.3 and 4.4. (CVE-2026-53249)

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-2026-53249

Plugin Details

Severity: Medium

ID: 464355

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-2026-53249

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-2026-53249