Echo: linux: security update to 6.1.176-1

critical Tenable Cloud Security Plugin ID 457983

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: RDMA/rxe: Validate pad and ICRC before
payload_size() in rxe_rcv rxe_rcv() currently checks only that the incoming packet is at least
header_size(pkt) bytes long before payload_size() is used. However, payload_size() subtracts both the
attacker-controlled BTH pad field and RXE_ICRC_SIZE from pkt->paylen: payload_size = pkt->paylen -
offset[RXE_PAYLOAD] - bth_pad(pkt) - RXE_ICRC_SIZE This means a short packet can still make payload_size()
underflow even if it includes enough bytes for the fixed headers. Simply requiring header_size(pkt) +
RXE_ICRC_SIZE is not sufficient either, because a packet with a forged non-zero BTH pad can still leave
payload_size() negative and pass an underflowed value to later receive-path users. Fix this by validating
pkt->paylen against the full minimum length required by payload_size(): header_size(pkt) + bth_pad(pkt) +
RXE_ICRC_SIZE. (CVE-2026-46043)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

Plugin Details

Severity: Critical

ID: 457983

Version: Revision 1.1

Type: Local

Family: Echo Local Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.63

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-46043

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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: 5/27/2026

Reference Information

CVE: CVE-2026-46043

Detections

Analytics