CVE-2021-36086

What it is

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).

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. Limited direct impact.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-07-01 03:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-14 12:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.6% in the next 30 days (EPSS).
• Severity: 3.3 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-07-01 03:15 UTC

Last modified

2026-10-14 12:17 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-416 · Use after free

Record status

Modified

Affected

• Debian Linux 11.0
• Netapp Active Iq Unified Manager
• Netapp Bootstrap Os
• Netapp h610c Firmware
• Netapp h610s Firmware
• Netapp h615c Firmware
• Selinux Project Selinux < 3.3
• Fedoraproject Fedora 35

Attack profile CVSS 3.1 · 3.3

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-36086.md and follow it. Check whether this project is affected by CVE-2021-36086. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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