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Fencer Vulns
medium 6.5

CVE-2022-4144 json

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU.

published 2022-11-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51506

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:7.2+dfsg-1

debian advisories DEBIAN-CVE-2022-4144

  • qemu Ubuntu 20.04 LTS 1:4.2-3ubuntu6.27
  • qemu Ubuntu 22.04 LTS 1:6.2+dfsg-2ubuntu6.11
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47+esm3
  • qemu Ubuntu Pro 16.04 LTS 1:2.5+dfsg-5ubuntu10.51+esm2
  • qemu Ubuntu Pro 18.04 LTS 1:2.11+dfsg-1ubuntu7.42+esm1

ubuntu advisories UBUNTU-CVE-2022-4144

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 RHEL 8 20210217-1.module+el8.7.0+16689+53d59bc2
  • hivex RHEL 8 1.3.18-23.module+el8.7.0+16689+53d59bc2
  • netcf RHEL 8 0.2.8-12.module+el8.7.0+16689+53d59bc2
  • swtpm RHEL 8 0.7.0-4.20211109gitb79fd91.module+el8.7.0+16689+53d59bc2
  • libnbd RHEL 8 1.6.0-5.module+el8.7.0+16689+53d59bc2
  • nbdkit RHEL 8 1.24.0-4.module+el8.7.0+16689+53d59bc2
  • libtpms RHEL 8 0.9.1-1.20211126git1ff6fe1f43.module+el8.7.0+16689+53d59bc2
  • libvirt RHEL 8 8.0.0-10.1.module+el8.7.0+17192+cbc2449b

red hat advisories RHSA-2023:0432RHSA-2023:0099

  • qemu SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +2 more 4.2.1-150200.72.2
  • qemu SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Real Time 15 SP3 +7 more 5.2.0-150300.121.2
  • qemu SLES for SAP 12 SP5, SLES 12 SP5 3.1.1.1-66.1
  • qemu SLE Module for Server Applications 15 SP4, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +2 more 6.2.0-150400.37.11.1
  • qemu-testsuite openSUSE Leap 15.4 6.2.0-150400.37.11.2
  • qemu-linux-user openSUSE Leap 15.4 6.2.0-150400.37.11.1
  • qemu SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 3.1.1.1-150100.80.46.1

suse advisories SUSE-SU-2023:0878-1SUSE-SU-2023:0877-1SUSE-SU-2023:0840-1SUSE-SU-2023:0761-1SUSE-SU-2023:0671-1

  • qemu openSUSE Tumbleweed 7.1.0-10.1

opensuse advisories openSUSE-SU-2024:12685-1

  • SLOF AlmaLinux 8 20210217-1.module_el8.6.0+2880+7d9e3703
  • hivex AlmaLinux 8 1.3.18-23.module_el8.6.0+2880+7d9e3703
  • hivex AlmaLinux 8 1.3.18-23.module_el8.6.0+3161+a07c0ea5
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+2880+7d9e3703
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+3161+a07c0ea5
  • swtpm AlmaLinux 8 0.7.0-4.20211109gitb79fd91.module_el8.7.0+3346+68867adb
  • libnbd AlmaLinux 8 1.6.0-5.module_el8.6.0+2880+7d9e3703
  • libnbd AlmaLinux 8 1.6.0-5.module_el8.6.0+3161+a07c0ea5

almalinux advisories ALSA-2023:0099

  • hivex Rocky Linux 8 1.3.18-23.module+el8.7.0+1084+97b81f61
  • hivex Rocky Linux 8 1.3.18-23.module+el8.6.0+847+b490afdd
  • 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
  • swtpm Rocky Linux 8 0.7.0-4.20211109gitb79fd91.module+el8.7.0+1084+97b81f61
  • libnbd Rocky Linux 8 1.6.0-5.module+el8.7.0+1084+97b81f61
  • libnbd Rocky Linux 8 1.6.0-5.module+el8.6.0+847+b490afdd

rocky linux advisories RLSA-2023:0099

  • qemu CBL-Mariner 2.0 6.2.0-12
  • qemu Azure Linux 3.0 6.2.0-18

azure linux advisories AZL-11522AZL-35164

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2022-4144 updated cvss 6.5

QEMU: QXL: qxl_phys2virt unsafe address translation can lead to out-of-bounds read

  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, spice-server, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 spice, qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, +7 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 spice, spice-server 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: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 13 (Queens) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) libnbd 1.6.0-5.module+el8.7.0+16689+53d59bc2, netcf 0.2.8-12.module+el8.7.0+16689+53d59bc2, hivex 1.3.18-23.module+el8.7.0+16689+53d59bc2, nbdfuse 1.6.0-5.module+el8.7.0+16689+53d59bc2, SLOF 20210217-1.module+el8.7.0+16689+53d59bc2, seabios 1.16.0-3.module+el8.7.0+16689+53d59bc2, +38 more
    fixed: vendor fix RHSA-2023:0099
  • Red Hat CodeReady Linux Builder EUS (v.8.6) libnbd 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, netcf 0.2.8-12.module+el8.6.0+14480+c0a3aa0f, hivex 1.3.18-23.module+el8.6.0+14480+c0a3aa0f, nbdfuse 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, SLOF 20210217-1.module+el8.6.0+14480+c0a3aa0f, seabios 1.15.0-2.module+el8.6.0+14757+c25ee005, +38 more
    fixed: vendor fix RHSA-2023:0432
  • Red Hat Enterprise Linux AppStream (v. 8) libnbd 1.6.0-5.module+el8.7.0+16689+53d59bc2, netcf 0.2.8-12.module+el8.7.0+16689+53d59bc2, hivex 1.3.18-23.module+el8.7.0+16689+53d59bc2, nbdfuse 1.6.0-5.module+el8.7.0+16689+53d59bc2, nbdkit 1.24.0-4.module+el8.7.0+16689+53d59bc2, SLOF 20210217-1.module+el8.7.0+16689+53d59bc2, +104 more
    fixed: vendor fix RHSA-2023:0099
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) libnbd 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, netcf 0.2.8-12.module+el8.6.0+14480+c0a3aa0f, hivex 1.3.18-23.module+el8.6.0+14480+c0a3aa0f, nbdfuse 1.6.0-5.module+el8.6.0+14480+c0a3aa0f, nbdkit 1.24.0-4.module+el8.6.0+14480+c0a3aa0f, SLOF 20210217-1.module+el8.6.0+14480+c0a3aa0f, +104 more
    fixed: vendor fix RHSA-2023:0432
  • Red Hat Enterprise Linux 9 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tools, qemu-pr-helper, qemu-kvm-common, +16 more
    not affected: vulnerable code not present

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected products

  • n/a QEMU (QXL device)

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.