---
id: CVE-2021-36086
title: >-
  The CIL compiler in SELinux 3.2 has a use-after-free in
  cil_reset_classpermission (called from cil_reset_classperms_set and
  cil_reset_classperms_list).
summary: >-
  The CIL compiler in SELinux 3.2 has a use-after-free in
  cil_reset_classpermission (called from cil_reset_classperms_set and
  cil_reset_classperms_list).
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-416
vendor: netapp
product: active_iq_unified_manager
affected:
  - debian_linux = 11.0
  - active_iq_unified_manager
  - bootstrap_os
  - h610c_firmware
  - h610s_firmware
  - h615c_firmware
  - selinux < 3.3
  - fedora = 35
patched:
  - selinux 3.3
published: '2021-07-01'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T12:17:14.290'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-36086'
references:
  - url: 'https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177'
    label: cve@mitre.org
  - url: >-
      https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8
    label: cve@mitre.org
  - url: >-
      https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
    label: cve@mitre.org
  - url: 'https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/10/msg00021.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20250207-0004/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-202008.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00597
epssPercentile: 0.47145
ingestedAt: '2026-10-14T12:29:10.821Z'
---

## Overview

The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list).

## Affected

- `debian_linux = 11.0`
- `active_iq_unified_manager`
- `bootstrap_os`
- `h610c_firmware`
- `h610s_firmware`
- `h615c_firmware`
- `selinux < 3.3`
- `fedora = 35`

## Remediation

Upgrade past the affected range:

- `selinux 3.3`