Low severity3.9OSV Advisory· Published Jun 13, 2018· Updated Jun 17, 2026
CVE-2018-1121
CVE-2018-1121
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
5- seclists.org/oss-sec/2018/q2/122nvdExploitMailing ListThird Party Advisory
- www.exploit-db.com/exploits/44806/nvdExploitThird Party AdvisoryVDB Entry
- www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txtnvdExploitThird Party Advisory
- www.securityfocus.com/bid/104214nvdThird Party AdvisoryVDB Entry
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
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