CVE-2021-4218
MEDIUM
5.5
CVSS Score
Published: August 24, 2022 at 03:08 PM UTC
Updated: June 17, 2026 at 04:19 AM UTC
2 products affected across 2 vendorsLinux KernelKernel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (3)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2021-4218x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://bugs.centos.org/view.php?id=18395x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2048359CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-665
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