Vulnerability Monitor

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CVE-2021-26708

A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.

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 12 products from linux, from netapp, from netapp and 9 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

2021-02-05T14:15:18.780

Last Modified

2024-11-21T05:56:42.880

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: Primary
CWE-667

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 5.10.13	Yes
Application	netapp	aff_baseboard_management_controller	-	Yes
Application	netapp	cloud_backup	-	Yes
Application	netapp	fas_baseboard_management_controller	-	Yes
Application	netapp	solidfire_\&_hci_management_node	-	Yes
Application	netapp	solidfire_baseboard_management_controller	-	Yes
Operating System	netapp	baseboard_management_controller_500f_firmware	< 15.3	Yes
Hardware	netapp	500f	-	No
Operating System	netapp	baseboard_management_controller_a250_firmware	< 15.3	Yes
Hardware	netapp	a250	-	No
Operating System	netapp	hci_h410c_firmware	-	Yes
Hardware	netapp	hci_h410c	-	No

References

http://www.openwall.com/lists/oss-security/2021/02/05/6 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/04/09/2 Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2022/01/25/14 Mailing List ([email protected])
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 Release Notes, Vendor Advisory ([email protected])
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 Patch, Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210312-0008/ Patch, Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2021/02/04/5 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/02/05/6 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/04/09/2 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2022/01/25/14 Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210312-0008/ Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2021/02/04/5 Mailing List, Patch, Third Party Advisory (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.