CVE-2018-14617: canonical ubuntu_linux NULL Pointer Dereference
Vulnerability summary
CVE-2018-14617 is a high (CVSS 7.1) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 2.51% chance of exploitation in the next 30 days, higher than 84.7% of scored vulnerabilities. 1 public exploit is recorded.
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 21 · Related 18Timeline
- 27-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.51%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.51% 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
1 foundExploit Reference (bugzilla.kernel.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu23 products
- linuxAll versions (No fix recorded) | < 4.4.0-139.165 | < 4.15.0-58.64
- linux-aws< 4.4.0-1034.37 | < 4.4.0-1072.82 | < 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 | < 4.18.0-1011.11~18.04.1
Debian2 products
- linux< 4.18.8-1
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04
Linux1 product
- linux_kernel≤ 4.17.10
4 vendors · 27 products
References
16 links- www.spinics.net/lists/linux-fsdevel/msg130021.htmlX Refsource MISCIssue TrackingPatchThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing ListX Refsource MLISTThird Party Advisory- bugzilla.kernel.org/show_bug.cgi?id=200297X Refsource MISCExploitIssue TrackingThird Party AdvisoryREPORT