Memory Leak Affecting kernel-default-devel package, versions <5.3.18-24.9.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES152-KERNELDEFAULTDEVEL-2707802
  • published14 Apr 2022
  • disclosed3 Aug 2020

Introduced: 3 Aug 2020

CVE-2020-12656  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade SLES:15.2 kernel-default-devel to version 5.3.18-24.9.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-devel package and not the kernel-default-devel package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug

CVSS Scores

version 3.1