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Fencer Vulns
low 3.8

CVE-2019-12068 json

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed),…

published 2019-09-24 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3721

cvss
3.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances 's->dsp' index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:4.1-2

debian advisories DEBIAN-CVE-2019-12068

  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.42
  • qemu Ubuntu 18.04 LTS 1:2.11+dfsg-1ubuntu7.20
  • qemu Ubuntu 20.04 LTS 1:4.2-1ubuntu1
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47

ubuntu advisories UBUNTU-CVE-2019-12068

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

  • kvm SLE Point of Sale 11 SP3 1.4.2-53.38.1
  • qemu SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 2.9.1-6.44.1
  • qemu SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 2.6.2-41.59.1
  • qemu SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 2.11.2-5.23.2
  • qemu SLE Module for Server Applications 15 SP1, SLE Module for Basesystem 15 SP1 3.1.1.1-9.6.2
  • qemu SLE Module for Server Applications 15, SLE Module for Basesystem 15 2.11.2-9.33.1
  • xen SLE Point of Sale 11 SP3 4.2.5_21-45.33.1
  • xen SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.7.6_06-43.54.2

suse advisories SUSE-SU-2021:14706-1SUSE-SU-2020:14396-1SUSE-SU-2020:1538-1SUSE-SU-2020:1526-1SUSE-SU-2020:1514-1SUSE-SU-2020:0388-1

  • qemu openSUSE Leap 15.1 3.1.1.1-lp151.7.6.1
  • qemu-linux-user openSUSE Leap 15.1 3.1.1.1-lp151.7.6.1
  • qemu openSUSE Leap 15.0 2.11.2-lp150.7.28.1

opensuse advisories openSUSE-SU-2019:2510-1openSUSE-SU-2019:2505-1

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-2019-12068 updated cvss 4.3

qemu: scsi: lsi: potential infinite loop when executing script in lsi_execute_script

  • Red Hat Enterprise Linux 5 xen
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 5 kvm 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 Red Hat Enterprise Linux 8 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, qemu-guest-agent, +8 more Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more Red Hat OpenStack Platform 10 (Newton) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    +2 more products
    Red Hat OpenStack Platform 13 (Queens) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev Red Hat OpenStack Platform 14 (Rocky) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    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

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 3.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

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.