CVE-2018-15594: canonical ubuntu_linux
Vulnerability summary
CVE-2018-15594 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 46.1% 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 15 · Related 10Timeline
- 20-08-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests.
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:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.55% 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.
Ubuntu10 products
- linux< 3.13.0-160.210 | < 4.4.0-137.163 | < 4.15.0-36.39
- linux-aws< 4.4.0-1031.34 | < 4.4.0-1069.79 | < 4.15.0-1023.23
- linux-azure< 4.15.0-1030.31~14.04.1 | < 4.15.0-1025.26~16.04.1 | < 4.15.0-1025.26
- linux-gcp< 4.15.0-1021.22~16.04.1 | < 4.15.0-1021.22
- linux-hwe< 4.15.0-36.39~16.04.1
Debian2 products
- linux< 4.17.15-1
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Linux1 product
- linux_kernel< 4.18.1
4 vendors · 14 products
References
28 links
lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing ListX Refsource MLISTThird Party Advisory- github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab1282535cb102fafdX Refsource MISCMitigationPatchThird Party AdvisoryREPORT
Show all 28 references
- cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1X Refsource MISCRelease NotesVendor AdvisoryREPORT