Memory Leak Affecting linux-4.19 package, versions <4.19.232-1~deb9u1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.04% (13th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Memory Leak vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN9-LINUX419-2420589
  • published26 Nov 2021
  • disclosed3 Mar 2022

Introduced: 26 Nov 2021

CVE-2021-4002  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.232-1~deb9u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.19 package and not the linux-4.19 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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 Base Scores

version 3.1