UBUNTU-CVE-2021-36085

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-36085

    UBUNTU-CVE-2021-36085

    Published: 1 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-36085
    Aliases:
    USN-5391-1

    Summary:

    Details: The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map).

    References: https://ubuntu.com/security/CVE-2021-36085, https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml, https://ubuntu.com/security/notices/USN-5391-1, https://www.cve.org/CVERecord?id=CVE-2021-36085

    Affected packages

    Package

    Name: libsepol

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.4-2ubuntu0.1~esm1

    Affected versions

    2.3-2

    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-2021-36085 | CVE-DB