CVE-2018-18849: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2018-18849 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 46.7% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 19 · Related 17Timeline
- 17-03-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In Qemu 3.0.0, lsi_do_msgin in hw/scsi/lsi53c895a.c allows out-of-bounds access by triggering an invalid msg_len value.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.56% 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 | 18.10
Debian1 product
- qemu< 1:3.1+dfsg-1
Fedoraproject1 product
- fedoraEOL29
Opensuse1 product
- leapEOL15.0 | 42.3
Qemu1 product
- qemu3.0.0
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.44 | < 1:2.5+dfsg-5ubuntu10.33 | < 1:2.11+dfsg-1ubuntu7.8
6 vendors · 6 products
References
16 links- lists.opensuse.org/opensuse-security-announce/2018-12/msg00028.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2018-12/msg00043.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2018-12/msg00004.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- www.openwall.com/lists/oss-security/2018/11/01/1X Refsource MISCMailing ListPatchThird Party Advisory
- lists.gnu.org/archive/html/qemu-devel/2018-10/msg06401.htmlX Refsource MISCPatchThird Party Advisory
