CVE-2018-18690: canonical ubuntu_linux
Vulnerability summary
CVE-2018-18690 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 52.5% 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 16 · Related 12Timeline
- 26-10-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
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
0.68%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.68% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu22 products
- linux< 3.13.0-164.214 | < 4.4.0-141.167 | < 4.15.0-43.46
- linux-aws< 4.4.0-1037.40 | < 4.4.0-1074.84 | < 4.15.0-1031.33
- linux-azure< 4.15.0-1036.38~14.04.2 | < 4.15.0-1036.38~16.04.1 | < 4.15.0-1036.38
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
Debian2 products
- linux< 4.17.3-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Linux1 product
- linux_kernel< 4.17
4 vendors · 26 products
References
25 linksShow all 25 references
lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory- github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473cX Refsource MISCPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing ListX Refsource MLISTThird Party Advisory