Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-25668

A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.0, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 26 products from linux, from debian, from netapp and 23 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-05-26T12:15:15.687

Last Modified

2024-11-21T05:18:24.567

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Secondary
CWE-362
Type: Primary
CWE-662

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 4.4.242	Yes
Operating System	linux	linux_kernel	< 4.9.242	Yes
Operating System	linux	linux_kernel	< 4.14.204	Yes
Operating System	linux	linux_kernel	< 4.19.155	Yes
Operating System	linux	linux_kernel	< 5.4.75	Yes
Operating System	linux	linux_kernel	< 5.9.5	Yes
Operating System	debian	debian_linux	9.0	Yes
Application	netapp	cloud_backup	-	Yes
Application	netapp	solidfire_\&_hci_management_node	-	Yes
Operating System	netapp	solidfire_baseboard_management_controller_firmware	-	Yes
Hardware	netapp	solidfire_baseboard_management_controller	-	No
Operating System	netapp	h410c_firmware	-	Yes
Hardware	netapp	h410c	-	No
Operating System	netapp	h300s_firmware	-	Yes
Hardware	netapp	h300s	-	No
Operating System	netapp	h500s_firmware	-	Yes
Hardware	netapp	h500s	-	No
Operating System	netapp	h700s_firmware	-	Yes
Hardware	netapp	h700s	-	No
Operating System	netapp	h300e_firmware	-	Yes
Hardware	netapp	h300e	-	No
Operating System	netapp	h500e_firmware	-	Yes
Hardware	netapp	h500e	-	No
Operating System	netapp	h700e_firmware	-	Yes
Hardware	netapp	h700e	-	No
Operating System	netapp	h410s_firmware	-	Yes
Hardware	netapp	h410s	-	No
Operating System	netapp	a250_firmware	-	Yes
Hardware	netapp	a250	-	No
Operating System	netapp	500f_firmware	-	Yes
Hardware	netapp	500f	-	No

References

http://www.openwall.com/lists/oss-security/2020/10/30/1 Exploit, Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2020/11/04/3 Exploit, Mailing List, Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C ([email protected])
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220 Mailing List, Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210702-0005/ Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2020/10/30/1%2C ([email protected])
https://www.openwall.com/lists/oss-security/2020/11/04/3%2C ([email protected])
http://www.openwall.com/lists/oss-security/2020/10/30/1 Exploit, Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2020/11/04/3 Exploit, Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210702-0005/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2020/10/30/1%2C (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2020/11/04/3%2C (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.