Memory Leak Affecting kernel-syms package, versions <5.3.18-59.40.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-SLES153-KERNELSYMS-2650317
  • published14 Apr 2022
  • disclosed19 Jan 2022

Introduced: 19 Jan 2022

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

How to fix?

Upgrade SLES:15.3 kernel-syms to version 5.3.18-59.40.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES. See How to fix? for SLES:15.3 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 Scores

version 3.1