Vulnerability in Linux Kernel
CVE-2021-4218
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.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel
- N/a Kernel — versions NA
Weakness classification (CWE)
References
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-4218?
- CVE-2021-4218 is a medium-severity vulnerability in Linux Kernel, classified under Improper Initialization. CVSS score: 5.5/10. Published 2022-08-24.
- How severe is CVE-2021-4218?
- Medium severity. CVSS v3 base score is 5.5 out of 10.