CVE-2019-12068: canonical ubuntu_linux Loop with Unreachable Exit Condition
Vulnerability summary
CVE-2019-12068 is a low (CVSS 3.8) Loop with Unreachable Exit Condition vulnerability in canonical ubuntu_linux. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.5% of scored vulnerabilities.
Not severe (CVSS 3.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 21 · Related 18Timeline
- 24-09-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated3.8LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated3.8LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.51% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.04 | 19.10
Debian1 product
- qemu< 1:4.1-2
Opensuse1 product
- leapEOL15.0 | 15.1
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.47 | < 1:2.5+dfsg-5ubuntu10.42 | < 1:2.11+dfsg-1ubuntu7.20 | < 1:4.2-1ubuntu1
4 vendors · 4 products
References
14 links
lists.debian.org/debian-lts-announce/2019/09/msg00021.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.htmlX Refsource MISCMailing ListPatchThird Party AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory