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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 457968

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: Fix recvmsg() unconditional
 requeue If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at the front of the
 recvmsg queue already has its mutex locked, it requeues the call - whether or not the call is already
 queued. The call may be on the queue because MSG_PEEK was also passed and so the call was not dequeued or
 because the I/O thread requeued it. The unconditional requeue may then corrupt the recvmsg queue, leading
 to things like UAFs or refcount underruns. Fix this by only requeuing the call if it isn't already on the
 queue - and moving it to the front if it is already queued. If we don't queue it, we have to put the ref
 we obtained by dequeuing it. Also, MSG_PEEK doesn't dequeue the call so shouldn't call
 rxrpc_notify_socket() for the call if we didn't use up all the data on the queue, so fix that also.
 (CVE-2026-23066)

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-2026-23066

Plugin Details

Severity: Medium

ID: 457968

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

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-2026-23066

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: 2/15/2026

Vulnerability Publication Date: 2/4/2026

Reference Information

CVE: CVE-2026-23066