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TI-2018-05584 Aliases CVE-2018-7738GHSA-jh5x-7c5f-4c44

In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain…

Priority LOW 34Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.

Why it matters now

EPSS 0.00429 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*up to 2.31Vulnerablekernel
  • cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* Versions up to 2.31 Vulnerable ·kernel

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-7738
  2. 2026-10-03 Alias added: GHSA-jh5x-7c5f-4c44

References

Patch 2

Advisory 3

  • TI-2014-07400 Blkid in util-linux before 2.26rc-1 allows local users to execute arbitrary code. CVSS 3.1HIGH 7.8
  • TI-2020-14100 An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated privlidges… CVSS 3.1MEDIUM 6.7
  • TI-2021-02893 A logic error was found in the libmount library of util-linux in the function that allows… CVSS 3.1MEDIUM 5.5
  • TI-2015-04386 The mkostemp function in login-utils in util-linux when used incorrectly allows remote… CVSS 3.1CRITICAL 9.8
  • TI-2026-21863 util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup CVSS 3.1MEDIUM 4.7
  • TI-2024-18667 wall in util-linux through 2.40, often installed with setgid tty permissions, allows… CVSS 3.1LOW 3.3
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences