CVE-2021-26708

HIGH
7
CVSS Score
Published: February 5, 2021 at 07:41 AM UTC
Updated: June 17, 2026 at 03:43 AM UTC
12 products affected across 2 vendorsLinux KernelCloud BackupSolidfire & Hci Management Node

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Severity
HIGH7
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.5 ≤ v < 5.10.13
Affected range stops below 5.10.13, so it looks safe — our inference, not a vendor statement
v < 15.3
Affected range stops below 15.3, so it looks safe — our inference, not a vendor statement
netapp-500f (environment)
v < 15.3
Affected range stops below 15.3, so it looks safe — our inference, not a vendor statement
netapp-a250 (environment)
All versions
All versions
netapp-hci-h410c (same device)
80%
All versions

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-667

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