A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2940-1 linux security update
Debian DLA Debian DLA DLA-2941-1 linux-4.19 security update
Debian DSA Debian DSA DSA-5096-1 linux security update
EUVD EUVD EUVD-2021-33909 A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
Ubuntu USN Ubuntu USN USN-5206-1 Linux kernel (OEM) vulnerability
Ubuntu USN Ubuntu USN USN-5207-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5208-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5209-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5210-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5211-1 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-5218-1 Linux kernel (OEM) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:16:03.279Z

Reserved: 2021-11-22T00:00:00

Link: CVE-2021-4002

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-03-03T22:15:08.527

Modified: 2024-11-21T06:36:42.333

Link: CVE-2021-4002

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-11-25T00:00:00Z

Links: CVE-2021-4002 - Bugzilla

cve-icon OpenCVE Enrichment

No data.