CVE-2021-41864

CVSS V2 Medium 4.6 CVSS V3 High 7.8

Description

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

Overview

CVE ID
CVE-2021-41864

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-10-02T00:15:07

Last Modified Date
2022-03-25T18:27:33

Weakness Enumerations

CWE	URL
CWE-190	http://cwe.mitre.org/data/definitions/190.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:linux:linux_kernel::::::::	1	OR	5.14.12
		AND
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:35:::::::*	1	OR
		AND
cpe:2.3:a:netapp:cloud_backup:-:::::::*	1	OR
cpe:2.3:a:netapp:hci_management_node:-:::::::*	1	OR
cpe:2.3:a:netapp:solidfire:-:::::::*	1	OR
		AND
cpe:2.3:o:netapp:h410c_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h410c:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h300s_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h300s:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h500s_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h500s:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h700s_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h700s:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h300e_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h300e:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h500e_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h500e:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h700e_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h700e:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:h410s_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:h410s:-:::::::*	0	OR
		AND
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:::::::*	1	OR
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:::::::*	0	OR
		AND
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
4.6

Severity
MEDIUM

Exploitability Score
3.9

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a	Mailing List Patch Vendor Advisory
https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211029-0004/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	Mailing List Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12	Mailing List Patch Vendor Advisory
https://www.debian.org/security/2022/dsa-5096	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	Mailing List Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-41864
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41864

History

Created	Old Value	New Value	Data Type	Notes
2022-04-04 00:42:01				Added to TrackCVE
2022-12-05 11:41:06	2021-10-02T00:15Z	2021-10-02T00:15:07	CVE Published Date	updated
2022-12-05 11:41:06		2022-03-25T18:27:33	CVE Modified Date	updated
2022-12-05 11:41:06		Analyzed	Vulnerability Status	updated