p PatchFirst

CVE-2021-20203

CVE-2021-20203

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

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

CVSS 3.2 · Low · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • qemu

    Versions
    • versions up to v5.2.0: Affected

    No fix published

  • qemu Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-1

    Update to 1:6.2+dfsg-1

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-1

    Update to 1:6.2+dfsg-1

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-1

    Update to 1:6.2+dfsg-1

  • qemu Ubuntu:Pro:14.04:LTS

    Versions
    • 1.5.0+dfsg-3ubuntu5
    • 1.5.0+dfsg-3ubuntu6
    • 1.6.0+dfsg-2ubuntu1
    • 1.6.0+dfsg-2ubuntu2
    • 1.6.0+dfsg-2ubuntu3
    • 1.6.0+dfsg-2ubuntu4
    • 1.7.0+dfsg-2ubuntu1
    • 1.7.0+dfsg-2ubuntu2
    • 1.7.0+dfsg-2ubuntu3
    • 1.7.0+dfsg-2ubuntu4
    • 1.7.0+dfsg-2ubuntu5
    • 1.7.0+dfsg-2ubuntu7
    • 1.7.0+dfsg-2ubuntu8
    • 1.7.0+dfsg-2ubuntu9
    • 1.7.0+dfsg-3ubuntu1~ppa1
    • 1.7.0+dfsg-3ubuntu1
    • 1.7.0+dfsg-3ubuntu2
    • 1.7.0+dfsg-3ubuntu3
    • 1.7.0+dfsg-3ubuntu4
    • 1.7.0+dfsg-3ubuntu5
    • 1.7.0+dfsg-3ubuntu6
    • 1.7.0+dfsg-3ubuntu7
    • 2.0.0~rc1+dfsg-0ubuntu1
    • 2.0.0~rc1+dfsg-0ubuntu2
    • 2.0.0~rc1+dfsg-0ubuntu3
    • 2.0.0~rc1+dfsg-0ubuntu3.1
    • 2.0.0+dfsg-2ubuntu1
    • 2.0.0+dfsg-2ubuntu1.1
    • 2.0.0+dfsg-2ubuntu1.2
    • 2.0.0+dfsg-2ubuntu1.3
    • 2.0.0+dfsg-2ubuntu1.5
    • 2.0.0+dfsg-2ubuntu1.6
    • 2.0.0+dfsg-2ubuntu1.7
    • 2.0.0+dfsg-2ubuntu1.8
    • 2.0.0+dfsg-2ubuntu1.9
    • 2.0.0+dfsg-2ubuntu1.10
    • 2.0.0+dfsg-2ubuntu1.11
    • 2.0.0+dfsg-2ubuntu1.13
    • 2.0.0+dfsg-2ubuntu1.14
    • 2.0.0+dfsg-2ubuntu1.15
    • 2.0.0+dfsg-2ubuntu1.16
    • 2.0.0+dfsg-2ubuntu1.17
    • 2.0.0+dfsg-2ubuntu1.18
    • 2.0.0+dfsg-2ubuntu1.19
    • 2.0.0+dfsg-2ubuntu1.20
    • 2.0.0+dfsg-2ubuntu1.21
    • 2.0.0+dfsg-2ubuntu1.22
    • 2.0.0+dfsg-2ubuntu1.24
    • 2.0.0+dfsg-2ubuntu1.25
    • 2.0.0+dfsg-2ubuntu1.26
    • 2.0.0+dfsg-2ubuntu1.27
    • 2.0.0+dfsg-2ubuntu1.28
    • 2.0.0+dfsg-2ubuntu1.29
    • 2.0.0+dfsg-2ubuntu1.30
    • 2.0.0+dfsg-2ubuntu1.31
    • 2.0.0+dfsg-2ubuntu1.32
    • 2.0.0+dfsg-2ubuntu1.33
    • 2.0.0+dfsg-2ubuntu1.34
    • 2.0.0+dfsg-2ubuntu1.35
    • 2.0.0+dfsg-2ubuntu1.36
    • 2.0.0+dfsg-2ubuntu1.38
    • 2.0.0+dfsg-2ubuntu1.39
    • 2.0.0+dfsg-2ubuntu1.40
    • 2.0.0+dfsg-2ubuntu1.41
    • 2.0.0+dfsg-2ubuntu1.42
    • 2.0.0+dfsg-2ubuntu1.43
    • 2.0.0+dfsg-2ubuntu1.44
    • 2.0.0+dfsg-2ubuntu1.45
    • 2.0.0+dfsg-2ubuntu1.46
    • 2.0.0+dfsg-2ubuntu1.47
    • 2.0.0+dfsg-2ubuntu1.47+esm1
    • 2.0.0+dfsg-2ubuntu1.47+esm2
    • 2.0.0+dfsg-2ubuntu1.47+esm3
    • 2.0.0+dfsg-2ubuntu1.47+esm4
    Affected ranges
    • ECOSYSTEM: < 2.0.0+dfsg-2ubuntu1.47+esm6

    Update to 2.0.0+dfsg-2ubuntu1.47+esm6

  • qemu Ubuntu:Pro:16.04:LTS

    Versions
    • 1:2.3+dfsg-5ubuntu9
    • 1:2.3+dfsg-5ubuntu10
    • 1:2.4+dfsg-4ubuntu1
    • 1:2.4+dfsg-4ubuntu2
    • 1:2.4+dfsg-4ubuntu3
    • 1:2.4+dfsg-5ubuntu3
    • 1:2.5+dfsg-1ubuntu2
    • 1:2.5+dfsg-1ubuntu3
    • 1:2.5+dfsg-1ubuntu4
    • 1:2.5+dfsg-1ubuntu5
    • 1:2.5+dfsg-5ubuntu1
    • 1:2.5+dfsg-5ubuntu2
    • 1:2.5+dfsg-5ubuntu4
    • 1:2.5+dfsg-5ubuntu6
    • 1:2.5+dfsg-5ubuntu7
    • 1:2.5+dfsg-5ubuntu10
    • 1:2.5+dfsg-5ubuntu10.1
    • 1:2.5+dfsg-5ubuntu10.2
    • 1:2.5+dfsg-5ubuntu10.3
    • 1:2.5+dfsg-5ubuntu10.4
    • 1:2.5+dfsg-5ubuntu10.5
    • 1:2.5+dfsg-5ubuntu10.6
    • 1:2.5+dfsg-5ubuntu10.7
    • 1:2.5+dfsg-5ubuntu10.8
    • 1:2.5+dfsg-5ubuntu10.9
    • 1:2.5+dfsg-5ubuntu10.10
    • 1:2.5+dfsg-5ubuntu10.11
    • 1:2.5+dfsg-5ubuntu10.13
    • 1:2.5+dfsg-5ubuntu10.14
    • 1:2.5+dfsg-5ubuntu10.15
    • 1:2.5+dfsg-5ubuntu10.16
    • 1:2.5+dfsg-5ubuntu10.20
    • 1:2.5+dfsg-5ubuntu10.21
    • 1:2.5+dfsg-5ubuntu10.22
    • 1:2.5+dfsg-5ubuntu10.24
    • 1:2.5+dfsg-5ubuntu10.25
    • 1:2.5+dfsg-5ubuntu10.26
    • 1:2.5+dfsg-5ubuntu10.28
    • 1:2.5+dfsg-5ubuntu10.29
    • 1:2.5+dfsg-5ubuntu10.30
    • 1:2.5+dfsg-5ubuntu10.31
    • 1:2.5+dfsg-5ubuntu10.32
    • 1:2.5+dfsg-5ubuntu10.33
    • 1:2.5+dfsg-5ubuntu10.34
    • 1:2.5+dfsg-5ubuntu10.35
    • 1:2.5+dfsg-5ubuntu10.36
    • 1:2.5+dfsg-5ubuntu10.37
    • 1:2.5+dfsg-5ubuntu10.38
    • 1:2.5+dfsg-5ubuntu10.39
    • 1:2.5+dfsg-5ubuntu10.40
    • 1:2.5+dfsg-5ubuntu10.41
    • 1:2.5+dfsg-5ubuntu10.42
    • 1:2.5+dfsg-5ubuntu10.43
    • 1:2.5+dfsg-5ubuntu10.44
    • 1:2.5+dfsg-5ubuntu10.45
    • 1:2.5+dfsg-5ubuntu10.46
    • 1:2.5+dfsg-5ubuntu10.47
    • 1:2.5+dfsg-5ubuntu10.48
    • 1:2.5+dfsg-5ubuntu10.49
    • 1:2.5+dfsg-5ubuntu10.51
    • 1:2.5+dfsg-5ubuntu10.51+esm1
    • 1:2.5+dfsg-5ubuntu10.51+esm2
    • 1:2.5+dfsg-5ubuntu10.51+esm3
    Affected ranges
    • ECOSYSTEM: < 1:2.5+dfsg-5ubuntu10.51+esm4

    Update to 1:2.5+dfsg-5ubuntu10.51+esm4

  • qemu Ubuntu:18.04:LTS

    Versions
    • 1:2.10+dfsg-0ubuntu3
    • 1:2.10+dfsg-0ubuntu4
    • 1:2.10+dfsg-0ubuntu5
    • 1:2.11+dfsg-1ubuntu1
    • 1:2.11+dfsg-1ubuntu2
    • 1:2.11+dfsg-1ubuntu4
    • 1:2.11+dfsg-1ubuntu5
    • 1:2.11+dfsg-1ubuntu6
    • 1:2.11+dfsg-1ubuntu7
    • 1:2.11+dfsg-1ubuntu7.1
    • 1:2.11+dfsg-1ubuntu7.2
    • 1:2.11+dfsg-1ubuntu7.3
    • 1:2.11+dfsg-1ubuntu7.4
    • 1:2.11+dfsg-1ubuntu7.5
    • 1:2.11+dfsg-1ubuntu7.6
    • 1:2.11+dfsg-1ubuntu7.7
    • 1:2.11+dfsg-1ubuntu7.8
    • 1:2.11+dfsg-1ubuntu7.9
    • 1:2.11+dfsg-1ubuntu7.10
    • 1:2.11+dfsg-1ubuntu7.12
    • 1:2.11+dfsg-1ubuntu7.13
    • 1:2.11+dfsg-1ubuntu7.14
    • 1:2.11+dfsg-1ubuntu7.15
    • 1:2.11+dfsg-1ubuntu7.17
    • 1:2.11+dfsg-1ubuntu7.18
    • 1:2.11+dfsg-1ubuntu7.19
    • 1:2.11+dfsg-1ubuntu7.20
    • 1:2.11+dfsg-1ubuntu7.21
    • 1:2.11+dfsg-1ubuntu7.22
    • 1:2.11+dfsg-1ubuntu7.23
    • 1:2.11+dfsg-1ubuntu7.25
    • 1:2.11+dfsg-1ubuntu7.26
    • 1:2.11+dfsg-1ubuntu7.27
    • 1:2.11+dfsg-1ubuntu7.28
    • 1:2.11+dfsg-1ubuntu7.29
    • 1:2.11+dfsg-1ubuntu7.31
    • 1:2.11+dfsg-1ubuntu7.32
    • 1:2.11+dfsg-1ubuntu7.33
    • 1:2.11+dfsg-1ubuntu7.34
    • 1:2.11+dfsg-1ubuntu7.35
    • 1:2.11+dfsg-1ubuntu7.36
    • 1:2.11+dfsg-1ubuntu7.37
    • 1:2.11+dfsg-1ubuntu7.38
    Affected ranges
    • ECOSYSTEM: < 1:2.11+dfsg-1ubuntu7.39

    Update to 1:2.11+dfsg-1ubuntu7.39

  • qemu Ubuntu:20.04:LTS

    Versions
    • 1:4.0+dfsg-0ubuntu9
    • 1:4.0+dfsg-0ubuntu10
    • 1:4.2-1ubuntu1
    • 1:4.2-1ubuntu2
    • 1:4.2-3ubuntu1
    • 1:4.2-3ubuntu2
    • 1:4.2-3ubuntu3
    • 1:4.2-3ubuntu4
    • 1:4.2-3ubuntu5
    • 1:4.2-3ubuntu6
    • 1:4.2-3ubuntu6.1
    • 1:4.2-3ubuntu6.2
    • 1:4.2-3ubuntu6.3
    • 1:4.2-3ubuntu6.4
    • 1:4.2-3ubuntu6.5
    • 1:4.2-3ubuntu6.6
    • 1:4.2-3ubuntu6.7
    • 1:4.2-3ubuntu6.8
    • 1:4.2-3ubuntu6.9
    • 1:4.2-3ubuntu6.10
    • 1:4.2-3ubuntu6.11
    • 1:4.2-3ubuntu6.12
    • 1:4.2-3ubuntu6.14
    • 1:4.2-3ubuntu6.15
    • 1:4.2-3ubuntu6.16
    • 1:4.2-3ubuntu6.17
    • 1:4.2-3ubuntu6.18
    • 1:4.2-3ubuntu6.19
    Affected ranges
    • ECOSYSTEM: < 1:4.2-3ubuntu6.21

    Update to 1:4.2-3ubuntu6.21

  • qemu Ubuntu:22.04:LTS

    Versions
    • 1:6.0+dfsg-2expubuntu1
    • 1:6.0+dfsg-2expubuntu2
    • 1:6.0+dfsg-2expubuntu4
    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-2ubuntu5

    Update to 1:6.2+dfsg-2ubuntu5

Original sources

Check your server →