CVE-2021-4197
CVE-2021-4197
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
23 Mar 2022Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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
n/a · kernelWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://bugzilla.redhat.com/show_bug.cgi?id=2035652https://lore.kernel.org/lkml/20211209214707.805617-1-tj%40kernel.org/T/https://security.netapp.com/advisory/ntap-20220602-0006/https://www.debian.org/security/2022/dsa-5127https://www.debian.org/security/2022/dsa-5173https://www.oracle.com/security-alerts/cpujul2022.html