CVE-2018-1108: canonical ubuntu_linux Use of Insufficiently Random Values
Vulnerability summary
CVE-2018-1108 is a medium (CVSS 5.9) Use of Insufficiently Random Values vulnerability in canonical ubuntu_linux. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 77.2% of scored vulnerabilities.
Not severe (CVSS 5.9, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 3Timeline
- 21-05-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
kernel drivers before version 4.17-rc1 are vulnerable to a weakness in the Linux kernel's implementation of random seed data. Programs, early in the boot sequence, could use the data allocated for the seed before it was sufficiently generated.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVDNIST5.9MediumCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
1.70%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
Decrease -0.03 pp
From 1.73% 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, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu8 products
- linux< 4.15.0-33.36
- linux-aws< 4.15.0-1020.20
- linux-azure< 4.15.0-1022.22~16.04.1 | < 4.15.0-1022.23
- linux-gcp< 4.15.0-1018.19~16.04.2 | < 4.15.0-1018.19
- linux-hwe< 4.15.0-33.36~16.04.1
Debian2 products
- linux< 4.16.5-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04
Kernel1 product
- driverskernel 4.17-rc1
Linux1 product
- linux_kernel≤ 4.16
5 vendors · 13 products
References
19 links
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1108X Refsource CONFIRMIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 19 references
- git.kernel.org/pub/…REPORT
- git.kernel.org/pub/…REPORT
- git.kernel.org/pub/…REPORT