CVE-2019-19921
runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 21, 2019
Updated · October 31, 2026
Description
A flaw was found in runc. An attacker who controls the container image for two containers that share a volume can race volume mounts during container initialization, by adding a symlink to the rootfs that points to a directory on the volume. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Statement
For Red Hat OpenStack Platform, because runc is not directly used by the director-operator, no update will be provided at this time for the operator containers.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-41 · Improper Resolution of Path Equivalence