CVE-2020-12656 (GCVE-0-2020-12656)
Vulnerability from cvelistv5
Published
2020-05-05 05:42
Modified
2024-08-04 12:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
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
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2020-12656",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-01T14:55:38.720866Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-04T17:12:29.734Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-04T12:04:22.563Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=206651"
},
{
"name": "openSUSE-SU-2020:0801",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
},
{
"name": "openSUSE-SU-2020:0935",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
},
{
"name": "USN-4483-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU",
"x_transferred"
],
"url": "https://usn.ubuntu.com/4483-1/"
},
{
"name": "USN-4485-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU",
"x_transferred"
],
"url": "https://usn.ubuntu.com/4485-1/"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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"
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-09-15T17:06:22.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=206651"
},
{
"name": "openSUSE-SU-2020:0801",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
},
{
"name": "openSUSE-SU-2020:0935",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
},
{
"name": "USN-4483-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "https://usn.ubuntu.com/4483-1/"
},
{
"name": "USN-4485-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "https://usn.ubuntu.com/4485-1/"
}
],
"tags": [
"disputed"
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2020-12656",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "** DISPUTED ** 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."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://bugzilla.kernel.org/show_bug.cgi?id=206651",
"refsource": "MISC",
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=206651"
},
{
"name": "openSUSE-SU-2020:0801",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
},
{
"name": "openSUSE-SU-2020:0935",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
},
{
"name": "USN-4483-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4483-1/"
},
{
"name": "USN-4485-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4485-1/"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2020-12656",
"datePublished": "2020-05-05T05:42:21.000Z",
"dateReserved": "2020-05-05T00:00:00.000Z",
"dateUpdated": "2024-08-04T12:04:22.563Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://bugzilla.kernel.org/show_bug.cgi?id=206651\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html\", \"name\": \"openSUSE-SU-2020:0801\", \"tags\": [\"vendor-advisory\", \"x_refsource_SUSE\", \"x_transferred\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html\", \"name\": \"openSUSE-SU-2020:0935\", \"tags\": [\"vendor-advisory\", \"x_refsource_SUSE\", \"x_transferred\"]}, {\"url\": \"https://usn.ubuntu.com/4483-1/\", \"name\": \"USN-4483-1\", \"tags\": [\"vendor-advisory\", \"x_refsource_UBUNTU\", \"x_transferred\"]}, {\"url\": \"https://usn.ubuntu.com/4485-1/\", \"name\": \"USN-4485-1\", \"tags\": [\"vendor-advisory\", \"x_refsource_UBUNTU\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T12:04:22.563Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2020-12656\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-01T14:55:38.720866Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-01T14:55:43.490Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"tags\": [\"disputed\"], \"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"references\": [{\"url\": \"https://bugzilla.kernel.org/show_bug.cgi?id=206651\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html\", \"name\": \"openSUSE-SU-2020:0801\", \"tags\": [\"vendor-advisory\", \"x_refsource_SUSE\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html\", \"name\": \"openSUSE-SU-2020:0935\", \"tags\": [\"vendor-advisory\", \"x_refsource_SUSE\"]}, {\"url\": \"https://usn.ubuntu.com/4483-1/\", \"name\": \"USN-4483-1\", \"tags\": [\"vendor-advisory\", \"x_refsource_UBUNTU\"]}, {\"url\": \"https://usn.ubuntu.com/4485-1/\", \"name\": \"USN-4485-1\", \"tags\": [\"vendor-advisory\", \"x_refsource_UBUNTU\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2020-09-15T17:06:22\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"n/a\"}]}, \"product_name\": \"n/a\"}]}, \"vendor_name\": \"n/a\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://bugzilla.kernel.org/show_bug.cgi?id=206651\", \"name\": \"https://bugzilla.kernel.org/show_bug.cgi?id=206651\", \"refsource\": \"MISC\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html\", \"name\": \"openSUSE-SU-2020:0801\", \"refsource\": \"SUSE\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html\", \"name\": \"openSUSE-SU-2020:0935\", \"refsource\": \"SUSE\"}, {\"url\": \"https://usn.ubuntu.com/4483-1/\", \"name\": \"USN-4483-1\", \"refsource\": \"UBUNTU\"}, {\"url\": \"https://usn.ubuntu.com/4485-1/\", \"name\": \"USN-4485-1\", \"refsource\": \"UBUNTU\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"** DISPUTED ** 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.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"n/a\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2020-12656\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"cve@mitre.org\"}}}}",
"cveMetadata": "{\"cveId\": \"CVE-2020-12656\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-04T12:04:22.563Z\", \"dateReserved\": \"2020-05-05T00:00:00\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2020-05-05T05:42:21\", \"assignerShortName\": \"mitre\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…