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CVE-2021-4002

Published: Mar 3, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-459
NVD MITRE
4.4CVSSMEDIUM
EPSS Score
0.5%
Top 60.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:LI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-459CWE-401

Affected Products

linux kernellinux
On-premOS
Operating Systems
debian linuxdebian
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
communications cloud native core binding support functionoracle
On-prem
Databases / relational
communications cloud native core network exposure functionoracle
On-premWeb App
Communications / messaging-chat
linuxoss-projectOperating Systemsaka the linux kernel
debianoss-projectGBOperating Systemsaka debian gnu/linux
fedoraprojectoss-projectUSOperating Systemsaka fedora project
oraclecommercialUSDatabasesaka oracle corp.
and 6 more affected products View all →

Exploitability

Official Patch Available

References

https://bugzilla.redhat.com/show_bug.cgi?id=2025726
bugzilla.redhat.com
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7ea
git.kernel.org
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890
git.kernel.org
and 17 more references View all →

Timeline

Published
Mar 3, 2022
Last Updated
Nov 21, 2024

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