Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 465928

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: net/rds: handle zerocopy send cleanup
before the message is queued A zerocopy send can fail after user pages have been pinned but before the
message is attached to the sending socket. The purge path currently infers zerocopy state from rm->m_rs,
so an unqueued message can be cleaned up as if it owned normal payload pages. However, zerocopy ownership
is really determined by the presence of op_mmp_znotifier, regardless of whether the message has reached
the socket queue. Capture op_mmp_znotifier up front in rds_message_purge() and use it as the cleanup
discriminator. If the message is already associated with a socket, keep the existing completion path.
Otherwise, drop the pinned page accounting directly and release the notifier before putting the payload
pages. This keeps early send failure cleanup consistent with the zerocopy lifetime rules without changing
the normal queued completion path. (CVE-2026-43502)

Solution

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

Plugin Details

Severity: High

ID: 465928

Version: Revision 1.1

Type: Local

Family: Echo Local Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 98.93

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-43502

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: 5/22/2026

Vulnerability Publication Date: 5/21/2026

Reference Information

CVE: CVE-2026-43502

Detections

Analytics