Bottlerocket: bottlerocket-kernel-5.15, kernel-5.15: security update to 5.15.179bottlerocket-kernel-6.1, kernel-6.1: security update to 6.1.131

high Tenable Cloud Security Plugin ID 428187

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: padata: avoid UAF for reorder_work
Although the previous patch can avoid ps and ps UAF for _do_serial, it can not avoid potential UAF issue
for reorder_work. This issue can happen just as below: crypto_request crypto_request crypto_del_alg
padata_do_serial ... padata_reorder // processes all remaining // requests then breaks while (1) { if
(!padata) break; ... } padata_do_serial // new request added list_add // sees the new request
queue_work(reorder_work) padata_reorder queue_work_on(squeue->work) ... <kworker context>
padata_serial_worker // completes new request, // no more outstanding // requests crypto_del_alg // free
pd <kworker context> invoke_padata_reorder // UAF of pd To avoid UAF for 'reorder_work', get 'pd' ref
before put 'reorder_work' into the 'serial_wq' and put 'pd' ref until the 'serial_wq' finish.
(CVE-2025-21726)

Plugin Details

Severity: High

ID: 428187

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

Temporal Score: 4.4

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

CVSS Score Source: CVE-2025-21726

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-2025-21726

Detections

Analytics