CVEvulnerability

CVE-2018-1120

5.3 MEDIUM Published 2018-06-20 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-06-20
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
2.8 LOW — CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CVSS 3.0 ([email protected])
5.3 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
3.5 LOW — AV:N/AC:M/Au:S/C:N/I:N/A:P
Weaknesses
CWE-119, CWE-122

Description

A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).

Affected configurations

• linux linux kernel (< 4.17) • redhat virtualization host 4.0 • redhat enterprise linux desktop 7.0 • redhat enterprise linux server 7.0 • redhat enterprise linux workstation 7.0 • debian debian linux 8.0 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04

Related

Weakness · CWE (2)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
  • CWE-122 Heap-based Buffer Overflow weakness

References