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high7.8

CVE-2021-4197

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some les…

Impact

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.2 before 4.14.276
from 4.15 before 4.19.238
from 4.20 before 5.4.189
from 5.5 before 5.10.111
from 5.11 before 5.15.14
OracleCommunications Cloud Native Core Binding Support Function
Versions 22.1.1, 22.1.3, 22.2.0
DebianDebian Linux
Version 10.0
BroadcomBrocade Fabric Operating System Firmware
All versions
NetappH300s Firmware
All versions
NetappH500s Firmware
All versions
NetappH700s Firmware
All versions
NetappH410s Firmware
All versions
NetappH410c Firmware
All versions

Weakness classification

CWE-287

References