UBUNTU-CVE-2021-36086

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    UBUNTU-CVE-2021-36086

    Published: 1 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-36086
    Aliases:
    USN-5391-1

    Summary:

    Details: 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).

    References: https://ubuntu.com/security/CVE-2021-36086, https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml, https://ubuntu.com/security/notices/USN-5391-1, https://www.cve.org/CVERecord?id=CVE-2021-36086

    Affected packages

    Package

    Name: libsepol

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.7-1ubuntu0.1

    Affected versions

    2.7-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2021-36086 | CVE-DB