CVE-2021-4218
MEDIUMLinux Kernel - Denial of Service via SVC RDMA Counter Sysctl
Title source: llmDescription
A flaw was found in the Linux kernel’s implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots. The issue is specific to CentOS/RHEL.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://bugs.centos.org/view.php?id=18395
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=2048359
Third Party Advisory x_refsource_misc
https://access.redhat.com/security/cve/CVE-2021-4218
Scores
CVSS v3
5.5
EPSS
0.0029
EPSS Percentile
20.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-665
Status
published
Products (1)
linux/linux_kernel
Published
Aug 24, 2022
Tracked Since
Feb 18, 2026