Description
Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.
Published: 2021-04-17
Score: 8.8 High
EPSS: 24.4% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-4915-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-4917-1 Linux kernel vulnerabilities
History

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Canonical Ubuntu Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2024-09-17T03:54:52.527Z

Reserved: 2021-04-09T00:00:00.000Z

Link: CVE-2021-3492

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-04-17T05:15:13.113

Modified: 2024-11-21T06:21:40.257

Link: CVE-2021-3492

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-04-16T00:00:00Z

Links: CVE-2021-3492 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses