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Echo: linux: security update to 6.1.176-1

critical Tenable Self-Hosted Container Security Plugin ID 465420

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: rxrpc: reject undecryptable rxkad
 response tickets rxkad_decrypt_ticket() decrypts the RXKAD response ticket and then parses the buffer as
 plaintext without checking whether crypto_skcipher_decrypt() succeeded. A malformed RESPONSE can therefore
 use a non-block-aligned ticket length, make the decrypt operation fail, and still drive the ticket parser
 with attacker-controlled bytes. Check the decrypt result and abort the connection with RXKADBADTICKET when
 ticket decryption fails. (CVE-2026-31637)

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-2026-31637

Plugin Details

Severity: Critical

ID: 465420

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.76

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-31637

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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: 4/24/2026

Reference Information

CVE: CVE-2026-31637