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Vulnerability Details :

CVE-2021-36085

Assigner-mitre

Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca

Published At-01 Jul, 2021 | 02:49

Updated At-04 Aug, 2024 | 00:47

The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map).

EPSS History

Score

Latest Score

N/A

Percentile

Latest Percentile

N/A

▼Common Vulnerabilities and Exposures (CVE)

cve.org

Assigner:mitre

Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca

Published At:01 Jul, 2021 | 02:49

Updated At:04 Aug, 2024 | 00:47

▼CVE Numbering Authority (CNA)

The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map).

Affected Products

Vendor

n/a

Product

n/a

Versions

Affected

Problem Types

Type	CWE ID	Description
text	N/A	n/a

Type: text

CWE ID: N/A

Description: n/a

References

Hyperlink	Resource
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml	x_refsource_MISC
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124	x_refsource_MISC
https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/	vendor-advisory x_refsource_FEDORA

Hyperlink: https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml

Resource:

x_refsource_MISC

Hyperlink: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124

Resource:

x_refsource_MISC

Hyperlink: https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba

Resource:

x_refsource_MISC

Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/

Resource:

vendor-advisory

x_refsource_FEDORA

▼Authorized Data Publishers (ADP)

CVE Program Container

References

Hyperlink	Resource
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml	x_refsource_MISC x_transferred
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124	x_refsource_MISC x_transferred
https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba	x_refsource_MISC x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/	vendor-advisory x_refsource_FEDORA x_transferred

Hyperlink: https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml

Resource:

x_refsource_MISC

x_transferred

Hyperlink: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124

Resource:

x_refsource_MISC

x_transferred

Hyperlink: https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba

Resource:

x_refsource_MISC

x_transferred

Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/

Resource:

vendor-advisory

x_refsource_FEDORA

x_transferred

▼National Vulnerability Database (NVD)

nvd.nist.gov

Source:cve@mitre.org

Published At:01 Jul, 2021 | 03:15

Updated At:07 Nov, 2023 | 03:36

The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map).

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	3.3	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Primary	2.0	2.1	LOW	AV:L/AC:L/Au:N/C:N/I:N/A:P

Type: Primary

Version: 3.1

Base score: 3.3

Base severity: LOW

Vector:

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Type: Primary

Version: 2.0

Base score: 2.1

Base severity: LOW

Vector:

AV:L/AC:L/Au:N/C:N/I:N/A:P

CPE Matches

selinux_project>>selinux>>3.2

cpe:2.3:o:selinux_project:selinux:3.2:*:*:*:*:*:*:*

Fedora Project

>>fedora>>35

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-416	Primary	nvd@nist.gov

CWE ID: CWE-416

Type: Primary

Source: nvd@nist.gov

References

Hyperlink	Source	Resource
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124	cve@mitre.org	Exploit Issue Tracking Patch Third Party Advisory
https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba	cve@mitre.org	Patch Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml	cve@mitre.org	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/	cve@mitre.org	N/A

Hyperlink: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31124

Source: cve@mitre.org

Resource:

Exploit

Issue Tracking

Patch

Third Party Advisory

Hyperlink: https://github.com/SELinuxProject/selinux/commit/2d35fcc7e9e976a2346b1de20e54f8663e8a6cba

Source: cve@mitre.org

Resource:

Patch

Third Party Advisory

Hyperlink: https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-421.yaml

Source: cve@mitre.org

Resource:

Third Party Advisory

Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/

Source: cve@mitre.org

Resource: N/A

CVE-2021-36085

Credits

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Solution/Workaround

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Stakeholder-Specific Vulnerability Categorization (SSVC)

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Change History

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