Bottlerocket: bottlerocket-kernel-5.15, kernel-5.15: security update to 5.15.184

medium Tenable Cloud Security Plugin ID 428212

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: bpf: avoid holding freeze_mutex during
mmap operation We use map->freeze_mutex to prevent races between map_freeze() and memory mapping BPF map
contents with writable permissions. The way we naively do this means we'll hold freeze_mutex for entire
duration of all the mm and VMA manipulations, which is completely unnecessary. This can potentially also
lead to deadlocks, as reported by syzbot in [0]. So, instead, hold freeze_mutex only during writeability
checks, bump (proactively) "write active" count for the map, unlock the mutex and proceed with mmap logic.
And only if something went wrong during mmap logic, then undo that "write active" counter increment. [0]
https://lore.kernel.org/bpf/[email protected]/ (CVE-2025-21853)

Plugin Details

Severity: Medium

ID: 428212

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: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-21853

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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

Vulnerability Publication Date: 3/12/2025

Reference Information

CVE: CVE-2025-21853

Detections

Analytics