DEBIAN-CVE-2021-4002

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2021-4002
Published: 03 Mar 2022, 22:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Mar 2022, 22:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Systems

  • debian•linux

    < 5.10.84-1 | < 5.15.5-1 | < 5.15.5-1 | < 5.15.5-1

References (1)