A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-34022 A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00496}

epss

{'score': 0.00543}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:16:04.485Z

Reserved: 2021-12-22T00:00:00

Link: CVE-2021-4154

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-02-04T23:15:12.307

Modified: 2024-11-21T06:37:00.750

Link: CVE-2021-4154

cve-icon Redhat

Severity : Important

Publid Date: 2021-12-14T00:00:00Z

Links: CVE-2021-4154 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses