Bottlerocket: bottlerocket-kernel-5.15, kernel-5.15: security update to 5.15.180

high Tenable Cloud Security Plugin ID 428201

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: ipv6: mcast: extend RCU protection in
igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we
can safely fetch the net pointer and avoid a potential UAF. Note that we no longer can use
sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep. Instead use
alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection. (CVE-2025-21759)

Plugin Details

Severity: High

ID: 428201

Version: Revision 1.3

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-2025-21759

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: 2/27/2025

Reference Information

CVE: CVE-2025-21759

Detections

Analytics