Bottlerocket: bottlerocket-kernel-5.15, kernel-5.15: security update to 5.15.178

high Tenable Self-Hosted Container Security Plugin ID 428180

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: netem: Update sch->q.qlen before
qdisc_tree_reduce_backlog() qdisc_tree_reduce_backlog() notifies parent qdisc only if child qdisc becomes
empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it would
miss the opportunity to call cops->qlen_notify(), in the case of DRR, it resulted in UAF since DRR uses
->qlen_notify() to maintain its active list. (CVE-2025-21703)

Plugin Details

Severity: High

ID: 428180

Version: Revision 1.2

Type: Local

Family: Bottlerocket Local Security Checks

Published: 6/30/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

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-2025-21703

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

Vulnerability Publication Date: 2/18/2025

Reference Information

CVE: CVE-2025-21703

Detections

Analytics