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

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Source ID Title
Ubuntu USN Ubuntu USN USN-4483-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4485-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00057}

epss

{'score': 0.00118}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T12:04:22.563Z

Reserved: 2020-05-05T00:00:00

Link: CVE-2020-12656

cve-icon Vulnrichment

Updated: 2024-08-04T12:04:22.563Z

cve-icon NVD

Status : Modified

Published: 2020-05-05T06:15:11.120

Modified: 2024-11-21T05:00:00.270

Link: CVE-2020-12656

cve-icon Redhat

Severity : Low

Publid Date: 2020-05-05T00:00:00Z

Links: CVE-2020-12656 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses