Bottlerocket: kernel-5.10, kernel-6.1: security update to 2.1.0

high Tenable Cloud Security Plugin ID 427925

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: fix __dst_negative_advice() race
__dst_negative_advice() does not enforce proper RCU rules when sk->dst_cache must be cleared, leading to
possible UAF. RCU rules are that we must first clear sk->sk_dst_cache, then call dst_release(old_dst).
Note that sk_dst_reset(sk) is implementing this protocol correctly, while __dst_negative_advice() uses the
wrong order. Given that ip6_negative_advice() has special logic against RTF_CACHE, this means each of the
three ->negative_advice() existing methods must perform the sk_dst_reset() themselves. Note the check
against NULL dst is centralized in __dst_negative_advice(), there is no need to duplicate it in various
callbacks. Many thanks to Clement Lecigne for tracking this issue. This old bug became visible after the
blamed commit, using UDP sockets. (CVE-2024-36971)

Plugin Details

Severity: High

ID: 427925

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: High

Score: 7.9

Percentile: 99.36

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2024-36971

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

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:F/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 6/10/2024

CISA Known Exploited Vulnerability Due Dates: 8/28/2024

Reference Information

CVE: CVE-2024-36971

Detections

Analytics