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Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 461277

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: sctp: stream: fully roll back denied
 add-stream state When ADD_OUT_STREAMS is denied, SCTP only shrinks the queued chunks and then lowers
 outcnt. That leaves removed stream metadata behind, so a later re-add can reuse a stale ext and hit a
 null-pointer dereference in the scheduler get path. Fix the rollback by tearing down the removed stream
 state the same way other stream resizes do. Unschedule the current scheduler state, drop the removed
 stream ext state with sctp_stream_outq_migrate(), and then reschedule the remaining streams. This keeps
 scheduler-private RR/FC/PRIO lists consistent while fully rolling back denied outgoing stream additions.
 (CVE-2026-52929)

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-2026-52929

Plugin Details

Severity: High

ID: 461277

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-52929

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 6/24/2026

Reference Information

CVE: CVE-2026-52929