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
References
Link | Resource |
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http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html | Mailing List Third Party Advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html | Mailing List Third Party Advisory |
https://bugzilla.kernel.org/show_bug.cgi?id=206651 | Issue Tracking Vendor Advisory |
https://usn.ubuntu.com/4483-1/ | Third Party Advisory |
https://usn.ubuntu.com/4485-1/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
07 Nov 2023, 03:15
Type | Values Removed | Values Added |
---|---|---|
Summary | 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 |
29 Apr 2022, 13:26
Type | Values Removed | Values Added |
---|---|---|
References | (UBUNTU) https://usn.ubuntu.com/4485-1/ - Third Party Advisory | |
References | (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html - Mailing List, Third Party Advisory | |
References | (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html - Mailing List, Third Party Advisory | |
References | (UBUNTU) https://usn.ubuntu.com/4483-1/ - Third Party Advisory | |
First Time |
Canonical ubuntu Linux
Canonical Opensuse Opensuse leap |
|
CWE | CWE-401 | |
CPE | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* |
Information
Published : 2020-05-05 06:15
Updated : 2024-04-11 01:06
NVD link : CVE-2020-12656
Mitre link : CVE-2020-12656
CVE.ORG link : CVE-2020-12656
JSON object : View
Products Affected
linux
- linux_kernel
opensuse
- leap
canonical
- ubuntu_linux
CWE
CWE-401
Missing Release of Memory after Effective Lifetime