procps-ng, procps is vulnerable to a process hiding through race condition. Since the kernel's proc_pid_readdir() returns PID entries in ascending numeric order, a process occupying a high PID can use inotify events to determine when the process list is being scanned, and fork/exec to obtain a lower PID, thus avoiding enumeration. An unprivileged attacker can hide a process from procps-ng's utilities by exploiting a race condition in reading /proc/PID entries. This vulnerability affects procps and procps-ng up to version 3.3.15, newer versions might be affected also.
CVSS Details
- CVSS 3.1 Base Score: 5.9
- CVSS 3.0 Base Score: 3.9
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | no-fix-debian-deb-package | May 15, 2025 | Jun 13, 2018 | |
| Gentoo Linux | gentoo-linux-upgrade-sys-process-procps | May 31, 2018 | May 30, 2018 | |
| Redhat_linux | — | no-fix-redhat-rpm-package | Jul 9, 2025 | Jun 13, 2018 |
| Ubuntu | no-fix-ubuntu-package | Jun 26, 2025 | Jun 13, 2018 |
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