CVE-2019-19921

CWE-706 — Use of Incorrectly-Resolved NameCWE-41CWE-362 — Race ConditionCWE-363CWE-6122 documents10 sources
Severity
7.0HIGH
EPSS
0.1%
top 68.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Github.com Opencontainers/runcOpencontainers RuncLinuxfoundation Runc+4 more
Timeline
PublishedFeb 12
Latest updateNov 5

Description

runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages6 packages

▶Gogithub.com/opencontainers/runc< 1.0.0-rc9.0.20200122160610-2fc03cc11c77
▶CVEListV5opencontainers/runc1.2.7, < 1.2.8
▶Debianrunc< 1.0.0~rc10+dfsg1-1+3
▶Ubunturunc< 1.0.0~rc10-0ubuntu1~18.04.2+1

Also affects: Debian Linux 10.0, 9.0, Ubuntu Linux 18.04, 19.10, Openshift Container Platform 4.1, 4.2

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

11
GHSA
runc container escape and denial of service due to arbitrary write gadgets and procfs write redirects↗2025-11-05
▶
Kernel
Merge tag 'vfs-6.17-rc1.nsfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs↗2025-07-28
▶
Kernel
uapi: export PROCFS_ROOT_INO↗2025-07-08
▶
OSV
runc vulnerabilities↗2023-05-23
▶
GHSA
Opencontainers runc Incorrect Authorization vulnerability↗2023-03-03
▶

📋Vendor Advisories

6
Ubuntu
runC vulnerabilities↗2023-05-23
▶
Microsoft
runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges related to libcontainer/rootfs_linux.go. To exploit this an attacker must be able to spawn two containers with custo↗2023-03-14
▶
Red Hat
runc: volume mount race condition (regression of CVE-2019-19921)↗2023-02-20
▶
Ubuntu
runC vulnerabilities↗2020-03-09
▶
Red Hat
runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation↗2019-12-21
▶

💬Community

4
Bugzilla
CVE-2019-19921 docker: runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation [openstack-rdo]↗2020-01-29
▶
Bugzilla
CVE-2019-19921 runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation↗2020-01-29
▶
Bugzilla
CVE-2019-19921 runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation [fedora-all]↗2020-01-29
▶
Bugzilla
CVE-2019-19921 docker: runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation [fedora-all]↗2020-01-29
▶
CVE-2019-19921 (HIGH CVSS 7) | runc through 1.0.0-rc9 has Incorrec | cvebase.io