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CVE-2021-3631

CVE-2021-3631

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

CVSS 6.3 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libvirt

    Versions
    • Fixed-In - libvirt v7.5.0: Affected

    No fix published

  • libvirt Debian:12

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Debian:13

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Debian:14

    Affected ranges
    • ECOSYSTEM: < 7.6.0-1

    Update to 7.6.0-1

  • libvirt Ubuntu:Pro:14.04:LTS

    Versions
    • 1.1.1-0ubuntu8
    • 1.1.1-0ubuntu9
    • 1.1.4-0ubuntu2
    • 1.1.4-0ubuntu3
    • 1.1.4-0ubuntu4
    • 1.1.4-0ubuntu5
    • 1.2.0-0ubuntu1
    • 1.2.0-0ubuntu2
    • 1.2.0-0ubuntu3
    • 1.2.1-0ubuntu1
    • 1.2.1-0ubuntu2
    • 1.2.1-0ubuntu3
    • 1.2.1-0ubuntu4
    • 1.2.1-0ubuntu5
    • 1.2.1-0ubuntu7
    • 1.2.1-0ubuntu8
    • 1.2.1-0ubuntu9
    • 1.2.1-0ubuntu10
    • 1.2.2-0ubuntu1
    • 1.2.2-0ubuntu2
    • 1.2.2-0ubuntu3
    • 1.2.2-0ubuntu4
    • 1.2.2-0ubuntu5
    • 1.2.2-0ubuntu6
    • 1.2.2-0ubuntu7
    • 1.2.2-0ubuntu8
    • 1.2.2-0ubuntu9
    • 1.2.2-0ubuntu10
    • 1.2.2-0ubuntu11
    • 1.2.2-0ubuntu12
    • 1.2.2-0ubuntu13
    • 1.2.2-0ubuntu13.1
    • 1.2.2-0ubuntu13.1.1
    • 1.2.2-0ubuntu13.1.2
    • 1.2.2-0ubuntu13.1.4
    • 1.2.2-0ubuntu13.1.5
    • 1.2.2-0ubuntu13.1.6
    • 1.2.2-0ubuntu13.1.7
    • 1.2.2-0ubuntu13.1.8
    • 1.2.2-0ubuntu13.1.9
    • 1.2.2-0ubuntu13.1.10
    • 1.2.2-0ubuntu13.1.12
    • 1.2.2-0ubuntu13.1.14
    • 1.2.2-0ubuntu13.1.16
    • 1.2.2-0ubuntu13.1.17
    • 1.2.2-0ubuntu13.1.20
    • 1.2.2-0ubuntu13.1.21
    • 1.2.2-0ubuntu13.1.22
    • 1.2.2-0ubuntu13.1.23
    • 1.2.2-0ubuntu13.1.25
    • 1.2.2-0ubuntu13.1.26
    • 1.2.2-0ubuntu13.1.27
    • 1.2.2-0ubuntu13.1.28
    • 1.2.2-0ubuntu13.1.28+esm1
    • 1.2.2-0ubuntu13.1.28+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libvirt Ubuntu:Pro:16.04:LTS

    Versions
    • 1.2.16-2ubuntu11
    • 1.2.16-2ubuntu12
    • 1.2.16-2ubuntu13
    • 1.2.16-2ubuntu14
    • 1.2.21-2ubuntu1
    • 1.2.21-2ubuntu3
    • 1.2.21-2ubuntu4
    • 1.2.21-2ubuntu5
    • 1.2.21-2ubuntu7
    • 1.2.21-2ubuntu8
    • 1.2.21-2ubuntu9
    • 1.2.21-2ubuntu10
    • 1.3.1-1ubuntu1
    • 1.3.1-1ubuntu2
    • 1.3.1-1ubuntu3
    • 1.3.1-1ubuntu4
    • 1.3.1-1ubuntu6
    • 1.3.1-1ubuntu9
    • 1.3.1-1ubuntu10
    • 1.3.1-1ubuntu10.1
    • 1.3.1-1ubuntu10.2
    • 1.3.1-1ubuntu10.3
    • 1.3.1-1ubuntu10.5
    • 1.3.1-1ubuntu10.6
    • 1.3.1-1ubuntu10.7
    • 1.3.1-1ubuntu10.8
    • 1.3.1-1ubuntu10.10
    • 1.3.1-1ubuntu10.11
    • 1.3.1-1ubuntu10.12
    • 1.3.1-1ubuntu10.13
    • 1.3.1-1ubuntu10.14
    • 1.3.1-1ubuntu10.15
    • 1.3.1-1ubuntu10.17
    • 1.3.1-1ubuntu10.18
    • 1.3.1-1ubuntu10.19
    • 1.3.1-1ubuntu10.21
    • 1.3.1-1ubuntu10.22
    • 1.3.1-1ubuntu10.23
    • 1.3.1-1ubuntu10.24
    • 1.3.1-1ubuntu10.25
    • 1.3.1-1ubuntu10.26
    • 1.3.1-1ubuntu10.27
    • 1.3.1-1ubuntu10.29
    • 1.3.1-1ubuntu10.30
    • 1.3.1-1ubuntu10.31
    • 1.3.1-1ubuntu10.31+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libvirt Ubuntu:18.04:LTS

    Versions
    • 3.6.0-1ubuntu5
    • 3.6.0-1ubuntu6
    • 4.0.0-1ubuntu1
    • 4.0.0-1ubuntu2
    • 4.0.0-1ubuntu3
    • 4.0.0-1ubuntu4
    • 4.0.0-1ubuntu5
    • 4.0.0-1ubuntu6
    • 4.0.0-1ubuntu7
    • 4.0.0-1ubuntu8
    • 4.0.0-1ubuntu8.1
    • 4.0.0-1ubuntu8.2
    • 4.0.0-1ubuntu8.3
    • 4.0.0-1ubuntu8.4
    • 4.0.0-1ubuntu8.5
    • 4.0.0-1ubuntu8.6
    • 4.0.0-1ubuntu8.7
    • 4.0.0-1ubuntu8.8
    • 4.0.0-1ubuntu8.9
    • 4.0.0-1ubuntu8.10
    • 4.0.0-1ubuntu8.11
    • 4.0.0-1ubuntu8.12
    • 4.0.0-1ubuntu8.13
    • 4.0.0-1ubuntu8.14
    • 4.0.0-1ubuntu8.15
    • 4.0.0-1ubuntu8.16
    • 4.0.0-1ubuntu8.17
    • 4.0.0-1ubuntu8.19
    • 4.0.0-1ubuntu8.20
    Affected ranges
    • ECOSYSTEM: < 4.0.0-1ubuntu8.21

    Update to 4.0.0-1ubuntu8.21

  • libvirt Ubuntu:20.04:LTS

    Versions
    • 5.4.0-0ubuntu5
    • 6.0.0-0ubuntu1
    • 6.0.0-0ubuntu2
    • 6.0.0-0ubuntu3
    • 6.0.0-0ubuntu4
    • 6.0.0-0ubuntu5
    • 6.0.0-0ubuntu6
    • 6.0.0-0ubuntu7
    • 6.0.0-0ubuntu8
    • 6.0.0-0ubuntu8.1
    • 6.0.0-0ubuntu8.2
    • 6.0.0-0ubuntu8.3
    • 6.0.0-0ubuntu8.4
    • 6.0.0-0ubuntu8.5
    • 6.0.0-0ubuntu8.7
    • 6.0.0-0ubuntu8.8
    • 6.0.0-0ubuntu8.9
    • 6.0.0-0ubuntu8.10
    • 6.0.0-0ubuntu8.11
    • 6.0.0-0ubuntu8.12
    • 6.0.0-0ubuntu8.13
    • 6.0.0-0ubuntu8.14
    • 6.0.0-0ubuntu8.15
    Affected ranges
    • ECOSYSTEM: < 6.0.0-0ubuntu8.16

    Update to 6.0.0-0ubuntu8.16

  • libvirt Ubuntu:22.04:LTS

    Versions
    • 7.6.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 7.6.0-0ubuntu3

    Update to 7.6.0-0ubuntu3

Original sources

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