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CVE-2021-20257

CVE-2021-20257

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

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS 6.5 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • qemu

    Versions
    • Fixed-In v6.2.0: Affected

    No fix published

  • qemu Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:5.2+dfsg-9

    Update to 1:5.2+dfsg-9

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:5.2+dfsg-9

    Update to 1:5.2+dfsg-9

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:5.2+dfsg-9

    Update to 1:5.2+dfsg-9

  • 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
    Affected ranges
    • ECOSYSTEM: < 1:2.11+dfsg-1ubuntu7.37

    Update to 1:2.11+dfsg-1ubuntu7.37

  • 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
    Affected ranges
    • ECOSYSTEM: < 1:4.2-3ubuntu6.17

    Update to 1:4.2-3ubuntu6.17

Original sources

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