CVE-2018-1120
Low
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).
SeverityLow
CVSS2.8
Exploit probability—
Product
Linux Kernel
PublishedJun 20, 2018
First seenJun 20, 2018
Weakness typeCWE-122CWE-122
How to fix
Update
- linux linux_kernel4.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.17 | 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, 18.04 | — |
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