CVE-2020-29568 | Date: (C)2020-12-16 (M)2024-04-19 |
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V3 Severity: | CVSS V2 Severity: |
CVSS Score : 6.5 | CVSS Score : 4.9 |
Exploit Score: 2.0 | Exploit Score: 3.9 |
Impact Score: 4.0 | Impact Score: 6.9 |
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CVSS V3 Metrics: | CVSS V2 Metrics: |
Attack Vector: LOCAL | Access Vector: LOCAL |
Attack Complexity: LOW | Access Complexity: LOW |
Privileges Required: LOW | Authentication: NONE |
User Interaction: NONE | Confidentiality: NONE |
Scope: CHANGED | Integrity: NONE |
Confidentiality: NONE | Availability: COMPLETE |
Integrity: NONE | |
Availability: HIGH | |
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