CVE-2018-16862: canonical ubuntu_linux
Vulnerability summary
CVE-2018-16862 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 44.9% of scored vulnerabilities.
Not severe (CVSS 5.3, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 13Timeline
- 26-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.
CVSS metrics
5 scores · 4 sources · 2 versions- CVE.orgCNA5.3MediumCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:NDiffers
- 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
0.53%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.53% 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, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu23 products
- linux< 4.4.0-142.168 | < 4.15.0-58.64
- linux-aws< 4.4.0-1038.41 | < 4.4.0-1075.85 | < 4.15.0-1047.49
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1047.49~16.04.1
- linux-azure< 4.15.0-1059.64~14.04.1 | < 4.15.0-1055.60 | < 5.0.0-1014.14~18.04.1
Debian2 products
- linux< 4.19.9-1
- debian_linuxEOL8.0
[unknown]1 product
- kernel:n/a
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04
Linux1 product
- linux_kernel≤ 4.14
Redhat1 product
- enterprise_linuxEOL7.0
6 vendors · 29 products
References
18 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16862X Refsource CONFIRMIssue TrackingThird Party Advisory
lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing ListX Refsource MLISTThird Party Advisory