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Fencer Vulns
medium 5.0

CVE-2020-14364 json

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0.

published 2020-08-31 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6507

cvss
5.0
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.4%
EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

Patch / fix

  • qemu qemu 5.2.0
  • qemu Debian 14, Debian 13, Debian 12 1:5.1+dfsg-4

debian advisories DEBIAN-CVE-2020-14364

  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.46
  • qemu Ubuntu 18.04 LTS 1:2.11+dfsg-1ubuntu7.32
  • qemu Ubuntu 20.04 LTS 1:4.2-3ubuntu6.6
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47+esm1

ubuntu advisories UBUNTU-CVE-2020-14364

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • SLOF advanced virtualization 8.1 20190703-1.gitba1ab360.module+el8.1.1+5309+6d656f05
  • hivex advanced virtualization 8.1 1.3.15-7.module+el8.1.1+5309+6d656f05
  • netcf advanced virtualization 8.1 0.2.8-12.module+el8.1.1+5309+6d656f05
  • swtpm advanced virtualization 8.1 0.2.0-1.20191018git9227cf4.module+el8.1.1+5309+6d656f05
  • libnbd advanced virtualization 8.1 1.0.3-1.module+el8.1.1+5659+15cacc69
  • nbdkit advanced virtualization 8.1 1.12.5-2.module+el8.1.1+5309+6d656f05
  • libtpms advanced virtualization 8.1 0.7.0-1.20191018gitdc116933b7.module+el8.1.1+5309+6d656f05
  • libvirt advanced virtualization 8.1 5.6.0-10.module+el8.1.1+5309+6d656f05

red hat advisories RHSA-2020:4058RHSA-2020:4290RHSA-2020:4291RHSA-2020:4056RHSA-2020:4111RHSA-2020:4176

  • qemu SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 2.11.2-5.32.1
  • qemu SLE Module for Server Applications 15 SP3, SLE Module for Basesystem 15 SP3 5.2.0-17.1
  • qemu SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +7 more 3.1.1.1-9.27.2
  • qemu SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 2.11.2-9.46.1
  • qemu SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +3 more 2.9.1-6.50.1
  • qemu SLE Module for Server Applications 15 SP2, SLE Module for Basesystem 15 SP2, SLE Micro 5.0 4.2.1-11.19.2
  • qemu SLES for SAP 12 SP5, SLES 12 SP5 3.1.1.1-51.1
  • qemu SLES 12 SP2-BCL 2.6.2-41.65.1

suse advisories SUSE-SU-2021:1947-1SUSE-SU-2021:1942-1SUSE-SU-2021:1918-1SUSE-SU-2021:1895-1SUSE-SU-2021:1894-1SUSE-SU-2021:1893-1

  • qemu openSUSE Tumbleweed 6.1.0-32.1
  • qemu openSUSE Leap 15.2 4.2.1-lp152.9.16.2
  • qemu-testsuite openSUSE Leap 15.2 4.2.1-lp152.9.16.7
  • qemu-linux-user openSUSE Leap 15.2 4.2.1-lp152.9.16.1
  • qemu openSUSE Leap 15.3 5.2.0-17.1
  • qemu openSUSE Leap 15.2 4.2.1-lp152.9.6.1
  • qemu-testsuite openSUSE Leap 15.2 4.2.1-lp152.9.6.1
  • qemu-linux-user openSUSE Leap 15.2 4.2.1-lp152.9.6.1

opensuse advisories openSUSE-SU-2024:11287-1openSUSE-SU-2021:1043-1openSUSE-SU-2021:1942-1openSUSE-SU-2020:1664-1

  • netcf AlmaLinux 8 0.2.8-12.module_el8.5.0+2608+72063365
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+2880+7d9e3703
  • netcf AlmaLinux 8 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
  • sgabios AlmaLinux 8 1:0.20170427git-3.module_el8.5.0+2608+72063365
  • sgabios AlmaLinux 8 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea
  • libiscsi AlmaLinux 8 1.18.0-8.module_el8.6.0+2880+7d9e3703
  • libiscsi AlmaLinux 8 1.18.0-8.module_el8.5.0+2608+72063365
  • libiscsi AlmaLinux 8 1.18.0-8.module_el8.3.0+2048+e7a0a3ea

almalinux advisories ALSA-2020:4059

  • netcf Rocky Linux 8 0.2.8-12.module+el8.7.0+1084+97b81f61
  • netcf Rocky Linux 8 0.2.8-12.module+el8.4.0+534+4680a14e
  • netcf Rocky Linux 8 0.2.8-12.module+el8.6.0+847+b490afdd
  • sgabios Rocky Linux 8 1:0.20170427git-3.module+el8.7.0+1084+97b81f61
  • sgabios Rocky Linux 8 1:0.20170427git-3.module+el8.4.0+534+4680a14e
  • sgabios Rocky Linux 8 1:0.20170427git-3.module+el8.6.0+847+b490afdd
  • libiscsi Rocky Linux 8 1.18.0-8.module+el8.7.0+1084+97b81f61
  • libiscsi Rocky Linux 8 1.18.0-8.module+el8.4.0+534+4680a14e

rocky linux advisories RLSA-2020:4059

  • xen Alpine 3.10 4.12.3-r3
  • xen Alpine 3.12, Alpine 3.11 4.13.1-r3
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 4.13.1-r5
  • xen Alpine 3.9 4.11.4-r1
  • qemu Alpine 3.12 5.0.0-r2
  • qemu Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 5.1.0-r1

alpine advisories ALPINE-CVE-2020-14364

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-14364 updated cvss 5.0

QEMU: usb: out-of-bounds r/w access issue while processing usb packets

  • Red Hat Enterprise Linux 5 kvm, xen
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more
    affected: workaround, no fix available
  • Red Hat Advanced Virtualization CodeReady Builder for RHEL 8.1.1 hivex 1.3.15-7.module+el8.1.1+5309+6d656f05, libnbd 1.0.3-1.module+el8.1.1+5659+15cacc69, netcf 0.2.8-12.module+el8.1.1+5309+6d656f05, libvirt 5.6.0-10.module+el8.1.1+5309+6d656f05, seabios 1.12.0-5.module+el8.1.1+5309+6d656f05, libiscsi 1.18.0-8.module+el8.1.1+5309+6d656f05, +44 more
    fixed: vendor fix RHSA-2020:4290
  • Red Hat Advanced Virtualization CodeReady Builder for RHEL 8.2.1 libnbd 1.2.2-1.module+el8.2.0+5644+32ac38d4, netcf 0.2.8-12.module+el8.2.0+4793+b09dd2fb, hivex 1.3.18-20.module+el8.2.0+5588+63a201c3, nbdfuse 1.2.2-1.module+el8.2.0+5644+32ac38d4, seabios 1.13.0-2.module+el8.2.1+7284+aa32a2c4, libiscsi 1.18.0-8.module+el8.2.0+4793+b09dd2fb, +45 more
    fixed: vendor fix RHSA-2020:4291
  • Red Hat Advanced Virtualization for RHEL 8.1.1 hivex 1.3.15-7.module+el8.1.1+5309+6d656f05, libnbd 1.0.3-1.module+el8.1.1+5659+15cacc69, netcf 0.2.8-12.module+el8.1.1+5309+6d656f05, nbdkit 1.12.5-2.module+el8.1.1+5309+6d656f05, libvirt 5.6.0-10.module+el8.1.1+5309+6d656f05, seabios 1.12.0-5.module+el8.1.1+5309+6d656f05, +96 more
    fixed: vendor fix RHSA-2020:4290
  • Red Hat Advanced Virtualization for RHEL 8.2.1 libnbd 1.2.2-1.module+el8.2.0+5644+32ac38d4, netcf 0.2.8-12.module+el8.2.0+4793+b09dd2fb, hivex 1.3.18-20.module+el8.2.0+5588+63a201c3, nbdfuse 1.2.2-1.module+el8.2.0+5644+32ac38d4, nbdkit 1.16.2-4.module+el8.2.1+6710+effcb1df, seabios 1.13.0-2.module+el8.2.1+7284+aa32a2c4, +96 more
    fixed: vendor fix RHSA-2020:4291
  • Red Hat CodeReady Linux Builder (v. 8) hivex 1.3.15-7.module+el8.1.0+4066+0f1aadab, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, libvirt 4.5.0-42.module+el8.2.0+6024+15a2423f, seabios 1.11.1-4.module+el8.1.0+4066+0f1aadab, libiscsi 1.18.0-8.module+el8.1.0+4066+0f1aadab, netcf-libs 0.2.8-12.module+el8.1.0+4066+0f1aadab, +34 more
    fixed: vendor fix RHSA-2020:4059
  • Red Hat CodeReady Linux Builder EUS (v. 8.1) hivex 1.3.15-7.module+el8.1.0+4066+0f1aadab, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, seabios 1.11.1-4.module+el8.1.0+4066+0f1aadab, libiscsi 1.18.0-8.module+el8.1.0+4066+0f1aadab, libvirt 4.5.0-35.3.module+el8.1.0+5931+8897e7e1, netcf-libs 0.2.8-12.module+el8.1.0+4066+0f1aadab, +34 more
    fixed: vendor fix RHSA-2020:4049
show 29 more
  • Red Hat Enterprise Linux AppStream (v. 8) hivex 1.3.15-7.module+el8.1.0+4066+0f1aadab, nbdkit 1.4.2-5.module+el8.1.0+4066+0f1aadab, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, libvirt 4.5.0-42.module+el8.2.0+6024+15a2423f, seabios 1.11.1-4.module+el8.1.0+4066+0f1aadab, libiscsi 1.18.0-8.module+el8.1.0+4066+0f1aadab, +80 more
    fixed: vendor fix RHSA-2020:4059
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) hivex 1.3.15-7.module+el8.0.0+4084+cceb9f44, nbdkit 1.4.2-5.module+el8.0.0+4084+cceb9f44, netcf 0.2.8-11.module+el8.0.0+4084+cceb9f44, seabios 1.11.1-4.module+el8.0.0+4084+cceb9f44, libiscsi 1.18.0-7.module+el8.0.0+4084+cceb9f44, libssh2 1.8.0-8.module+el8.0.0+4084+cceb9f44.1, +82 more
    fixed: vendor fix RHSA-2020:4058
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) hivex 1.3.15-7.module+el8.1.0+4066+0f1aadab, nbdkit 1.4.2-5.module+el8.1.0+4066+0f1aadab, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, seabios 1.11.1-4.module+el8.1.0+4066+0f1aadab, libiscsi 1.18.0-8.module+el8.1.0+4066+0f1aadab, supermin 5.1.19-9.module+el8.1.0+4066+0f1aadab, +81 more
    fixed: vendor fix RHSA-2020:4049
  • Red Hat Enterprise Linux Client (v. 7) qemu-img 1.5.3-175.el7_9.1, qemu-kvm 1.5.3-175.el7_9.1, qemu-kvm-tools 1.5.3-175.el7_9.1, qemu-kvm-common 1.5.3-175.el7_9.1 Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img 1.5.3-175.el7_9.1, qemu-kvm 1.5.3-175.el7_9.1, qemu-kvm-tools 1.5.3-175.el7_9.1, qemu-kvm-common 1.5.3-175.el7_9.1
    fixed: vendor fix RHSA-2020:4079
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) qemu-img 1.5.3-160.el7_6.8, qemu-kvm 1.5.3-160.el7_6.8, qemu-kvm-tools 1.5.3-160.el7_6.8, qemu-kvm-common 1.5.3-160.el7_6.8
    fixed: vendor fix RHSA-2020:4052
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) qemu-img 1.5.3-167.el7_7.7, qemu-kvm 1.5.3-167.el7_7.7, qemu-kvm-tools 1.5.3-167.el7_7.7, qemu-kvm-common 1.5.3-167.el7_7.7
    fixed: vendor fix RHSA-2020:4053
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.506.el6_10.8, qemu-kvm 0.12.1.2-2.506.el6_10.8, qemu-kvm-tools 0.12.1.2-2.506.el6_10.8, qemu-guest-agent 0.12.1.2-2.506.el6_10.8
    fixed: vendor fix RHSA-2020:4056
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) qemu-img-ma 2.12.0-18.el7_6.7, qemu-kvm-ma 2.12.0-18.el7_6.7, qemu-kvm-tools-ma 2.12.0-18.el7_6.7, qemu-kvm-common-ma 2.12.0-18.el7_6.7
    fixed: vendor fix RHSA-2020:4162
  • Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.506.el6_10.8, qemu-kvm 0.12.1.2-2.506.el6_10.8, qemu-kvm-tools 0.12.1.2-2.506.el6_10.8, qemu-guest-agent 0.12.1.2-2.506.el6_10.8 Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.506.el6_10.8, qemu-kvm 0.12.1.2-2.506.el6_10.8, qemu-kvm-tools 0.12.1.2-2.506.el6_10.8, qemu-guest-agent 0.12.1.2-2.506.el6_10.8
    fixed: vendor fix RHSA-2020:4056
  • Red Hat Enterprise Linux Server (v. 7) qemu-img 1.5.3-175.el7_9.1, qemu-kvm 1.5.3-175.el7_9.1, qemu-img-ma 2.12.0-48.el7_9.1, qemu-kvm-ma 2.12.0-48.el7_9.1, qemu-kvm-tools 1.5.3-175.el7_9.1, qemu-kvm-common 1.5.3-175.el7_9.1, +2 more
    fixed: vendor fix RHSA-2020:4079
  • Red Hat Enterprise Linux Server AUS (v. 6.5) qemu-img 0.12.1.2-2.415.el6_5.21, qemu-kvm 0.12.1.2-2.415.el6_5.21, qemu-kvm-tools 0.12.1.2-2.415.el6_5.21, qemu-guest-agent 0.12.1.2-2.415.el6_5.21
    fixed: vendor fix RHSA-2020:4054
  • Red Hat Enterprise Linux Server AUS (v. 6.6) qemu-img 0.12.1.2-2.448.el6_6.9, qemu-kvm 0.12.1.2-2.448.el6_6.9, qemu-kvm-tools 0.12.1.2-2.448.el6_6.9, qemu-guest-agent 0.12.1.2-2.448.el6_6.9
    fixed: vendor fix RHSA-2020:4055
  • Red Hat Enterprise Linux Server AUS (v. 7.2) qemu-img 1.5.3-105.el7_2.20, qemu-kvm 1.5.3-105.el7_2.20, libcacard 1.5.3-105.el7_2.20, qemu-kvm-tools 1.5.3-105.el7_2.20, qemu-kvm-common 1.5.3-105.el7_2.20
    fixed: vendor fix RHSA-2020:4048
  • Red Hat Enterprise Linux Server AUS (v. 7.3) qemu-img 1.5.3-126.el7_3.18, qemu-kvm 1.5.3-126.el7_3.18, qemu-kvm-tools 1.5.3-126.el7_3.18, qemu-kvm-common 1.5.3-126.el7_3.18
    fixed: vendor fix RHSA-2020:4050
  • Red Hat Enterprise Linux Server AUS (v. 7.4) qemu-img 1.5.3-141.el7_4.11, qemu-kvm 1.5.3-141.el7_4.11, qemu-kvm-tools 1.5.3-141.el7_4.11, qemu-kvm-common 1.5.3-141.el7_4.11
    fixed: vendor fix RHSA-2020:4051
  • Red Hat Enterprise Linux Server E4S (v. 7.3) qemu-img 1.5.3-126.el7_3.18, qemu-kvm 1.5.3-126.el7_3.18, qemu-kvm-tools 1.5.3-126.el7_3.18, qemu-kvm-common 1.5.3-126.el7_3.18
    fixed: vendor fix RHSA-2020:4050
  • Red Hat Enterprise Linux Server E4S (v. 7.4) qemu-img 1.5.3-141.el7_4.11, qemu-kvm 1.5.3-141.el7_4.11, qemu-kvm-tools 1.5.3-141.el7_4.11, qemu-kvm-common 1.5.3-141.el7_4.11
    fixed: vendor fix RHSA-2020:4051
  • Red Hat Enterprise Linux Server EUS (v. 7.6) qemu-img 1.5.3-160.el7_6.8, qemu-kvm 1.5.3-160.el7_6.8, qemu-img-ma 2.12.0-18.el7_6.7, qemu-kvm-ma 2.12.0-18.el7_6.7, qemu-kvm-tools 1.5.3-160.el7_6.8, qemu-kvm-common 1.5.3-160.el7_6.8, +2 more
    fixed: vendor fix RHSA-2020:4052
  • Red Hat Enterprise Linux Server EUS (v. 7.7) qemu-img 1.5.3-167.el7_7.7, qemu-kvm 1.5.3-167.el7_7.7, qemu-img-ma 2.12.0-33.el7_7.4, qemu-kvm-ma 2.12.0-33.el7_7.4, qemu-kvm-tools 1.5.3-167.el7_7.7, qemu-kvm-common 1.5.3-167.el7_7.7, +2 more
    fixed: vendor fix RHSA-2020:4053
  • Red Hat Enterprise Linux Server Optional (v. 7) qemu-kvm-ma 2.12.0-48.el7_9.1, qemu-kvm-tools-ma 2.12.0-48.el7_9.1, qemu-kvm-common-ma 2.12.0-48.el7_9.1
    fixed: vendor fix RHSA-2020:4078
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) libcacard-tools 1.5.3-105.el7_2.20
    fixed: vendor fix RHSA-2020:4048
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) qemu-kvm-ma 2.12.0-33.el7_7.4, qemu-kvm-tools-ma 2.12.0-33.el7_7.4, qemu-kvm-common-ma 2.12.0-33.el7_7.4
    fixed: vendor fix RHSA-2020:4047
  • Red Hat Enterprise Linux Server TUS (v. 7.3) qemu-img 1.5.3-126.el7_3.18, qemu-kvm 1.5.3-126.el7_3.18, qemu-kvm-tools 1.5.3-126.el7_3.18, qemu-kvm-common 1.5.3-126.el7_3.18
    fixed: vendor fix RHSA-2020:4050
  • Red Hat Enterprise Linux Server TUS (v. 7.4) qemu-img 1.5.3-141.el7_4.11, qemu-kvm 1.5.3-141.el7_4.11, qemu-kvm-tools 1.5.3-141.el7_4.11, qemu-kvm-common 1.5.3-141.el7_4.11
    fixed: vendor fix RHSA-2020:4051
  • Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.506.el6_10.8, qemu-kvm 0.12.1.2-2.506.el6_10.8, qemu-kvm-tools 0.12.1.2-2.506.el6_10.8, qemu-guest-agent 0.12.1.2-2.506.el6_10.8
    fixed: vendor fix RHSA-2020:4056
  • Red Hat Enterprise Linux Workstation (v. 7) qemu-img 1.5.3-175.el7_9.1, qemu-kvm 1.5.3-175.el7_9.1, qemu-kvm-tools 1.5.3-175.el7_9.1, qemu-kvm-common 1.5.3-175.el7_9.1
    fixed: vendor fix RHSA-2020:4079
  • Red Hat OpenStack Platform 10.0 qemu-img-rhev 2.12.0-33.el7_7.12, qemu-kvm-rhev 2.12.0-33.el7_7.12, qemu-kvm-tools-rhev 2.12.0-33.el7_7.12, qemu-kvm-common-rhev 2.12.0-33.el7_7.12
    fixed: vendor fix RHSA-2020:4176
  • Red Hat OpenStack Platform 13.0 qemu-img-rhev 2.12.0-48.el7_9.1, qemu-kvm-rhev 2.12.0-48.el7_9.1, qemu-kvm-tools-rhev 2.12.0-48.el7_9.1, qemu-kvm-common-rhev 2.12.0-48.el7_9.1 Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server qemu-img-rhev 2.12.0-18.el7_6.12, qemu-kvm-rhev 2.12.0-18.el7_6.12, qemu-kvm-tools-rhev 2.12.0-18.el7_6.12, qemu-kvm-common-rhev 2.12.0-18.el7_6.12
    fixed: vendor fix RHSA-2020:4167
  • Red Hat Virtualization 4 Hypervisor for RHEL 7 redhat-virtualization-host 4.3.11-20200922.0.el7_9, redhat-virtualization-host-image-update 4.3.11-20200922.0.el7_9
    fixed: vendor fix RHSA-2020:4115

4 more fixed, 4 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.40% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.0 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a QEMU

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.