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Debian Linux CVE-2021-36086

LOW
Use After Free (CWE-416)
2021-07-01 cve@mitre.org
3.3
CVSS 3.1 · NVD

Severity by source

NVD PRIMARY
3.3 LOW
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

4
Analysis Generated
Mar 24, 2026 - 20:37 vuln.today
Patch released
Mar 24, 2026 - 20:37 nvd
Patch available
PoC Detected
Mar 24, 2026 - 20:25 vuln.today
Public exploit code
CVE Published
Jul 01, 2021 - 03:15 nvd
LOW 3.3

DescriptionCVE.org

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).

AnalysisAI

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). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. 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 products include: Debian Debian Linux, Netapp Active Iq Unified Manager, Netapp Bootstrap Os, Netapp H610C Firmware, Netapp H610S Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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CVE-2021-36086 vulnerability details – vuln.today

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