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Fencer Vulns
medium 6.4

CVE-2023-5088 json

Qemu: improper ide controller reset can lead to mbr overwrite

published 2023-11-03 3 y ago modified 2026-11-07 47 h ago also EUVD-2023-57428

cvss
6.4
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 17%
public exploits
0
none known

Summary

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 8 8100020240314161907.e155f54d
  • Red Hat Red Hat Enterprise Linux 9 17:8.2.0-11.el9_4
  • qemu Debian 12 1:7.2+dfsg-7+deb12u3
  • qemu Debian 14, Debian 13 1:8.1.1+ds-2

debian advisories DEBIAN-CVE-2023-5088

  • qemu Ubuntu 20.04 LTS 1:4.2-3ubuntu6.28
  • qemu Ubuntu 22.04 LTS 1:6.2+dfsg-2ubuntu6.16
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47+esm6
  • qemu Ubuntu Pro 16.04 LTS 1:2.5+dfsg-5ubuntu10.51+esm4
  • qemu Ubuntu Pro 18.04 LTS 1:2.11+dfsg-1ubuntu7.42+esm5

ubuntu advisories UBUNTU-CVE-2023-5088

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 20210217-2.module+el8.10.0+20141+6faa2812
  • hivex RHEL 8 1.3.18-23.module+el8.9.0+18724+20190c23
  • netcf RHEL 8 0.2.8-12.module+el8.9.0+18724+20190c23
  • swtpm RHEL 8 0.7.0-4.20211109gitb79fd91.module+el8.9.0+18724+20190c23
  • libnbd RHEL 8 1.6.0-5.module+el8.9.0+18724+20190c23
  • nbdkit RHEL 8 1.24.0-5.module+el8.9.0+18724+20190c23
  • libtpms RHEL 8 0.9.1-2.20211126git1ff6fe1f43.module+el8.9.0+18724+20190c23
  • libvirt RHEL 8 8.0.0-23.module+el8.10.0+21023+5962ee04

red hat advisories RHSA-2024:2962RHSA-2024:2135

  • qemu-kvm AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-img AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-kvm-core AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-kvm-tools AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-pr-helper AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-kvm-common AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-guest-agent AlmaLinux 9 17:8.2.0-11.el9_4
  • qemu-kvm-audio-pa AlmaLinux 9 17:8.2.0-11.el9_4

almalinux advisories ALSA-2024:2135

  • hivex Rocky Linux 8 1.3.18-23.module+el8.10.0+1590+a67ab969
  • netcf Rocky Linux 8 0.2.8-12.module+el8.10.0+1590+a67ab969
  • swtpm Rocky Linux 8 0.7.0-4.20211109gitb79fd91.module+el8.10.0+1590+a67ab969
  • libnbd Rocky Linux 8 1.6.0-5.module+el8.10.0+1590+a67ab969
  • nbdkit Rocky Linux 8 1.24.0-5.module+el8.10.0+1590+a67ab969
  • libtpms Rocky Linux 8 0.9.1-2.20211126git1ff6fe1f43.module+el8.10.0+1590+a67ab969
  • libvirt Rocky Linux 8 8.0.0-23.1.module+el8.10.0+1779+84732956
  • seabios Rocky Linux 8 1.16.0-4.module+el8.9.0+1408+7b966129

rocky linux advisories RLSA-2024:2962RLSA-2024:2135

  • qemu CBL-Mariner 2.0 6.2.0-21

azure linux advisories AZL-35596

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-2023-5088 updated cvss 6.4

QEMU: improper IDE controller reset can lead to MBR overwrite

  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, qemu-kvm-tools, +5 more
    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 planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) libnbd 1.6.0-5.module+el8.9.0+18724+20190c23, netcf 0.2.8-12.module+el8.9.0+18724+20190c23, hivex 1.3.18-23.module+el8.9.0+18724+20190c23, nbdfuse 1.6.0-5.module+el8.9.0+18724+20190c23, nbdkit 1.24.0-5.module+el8.9.0+18724+20190c23, seabios 1.16.0-4.module+el8.9.0+19570+14a90618, +104 more
    fixed: vendor fix RHSA-2024:2962
  • Red Hat Enterprise Linux AppStream (v. 9) qemu-img 8.2.0-11.el9_4, qemu-kvm 8.2.0-11.el9_4, qemu-kvm-core 8.2.0-11.el9_4, qemu-kvm-tools 8.2.0-11.el9_4, qemu-pr-helper 8.2.0-11.el9_4, qemu-kvm-common 8.2.0-11.el9_4, +13 more
    fixed: vendor fix RHSA-2024:2135
  • Red Hat Enterprise Linux CRB (v. 8) libnbd 1.6.0-5.module+el8.9.0+18724+20190c23, netcf 0.2.8-12.module+el8.9.0+18724+20190c23, hivex 1.3.18-23.module+el8.9.0+18724+20190c23, nbdfuse 1.6.0-5.module+el8.9.0+18724+20190c23, seabios 1.16.0-4.module+el8.9.0+19570+14a90618, SLOF 20210217-2.module+el8.10.0+20141+6faa2812, +38 more
    fixed: vendor fix RHSA-2024:2962

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
total
Assessed
16 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization

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.