CVE-2022-42319: Medium severity XEN Xen vulnerability
Xenstore: Guests can cause Xenstore to not free temporary memory When working on a request of a guest, xenstored might need to allocate quite large amounts of memory temporarily. This memory is freed only after the request has been finished completely. A request is regarded to be finished only after the guest has read the response message of the request from the ring page. Thus a guest not reading the response can cause xenstored to not free the temporary memory. This can result in memory shortages causing Denial of Service (DoS) of xenstored.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/xento a version that resolves this vulnerability.Fixed in 4.14.6-1Fixed in 4.14.5+94-ge49571868d-1Fixed in 4.17.1+2-gb773c48e36-1Fixed in 4.17.2+55-g0b56bed864-1
Event History
Frequently Asked Questions
What is the severity of CVE-2022-42319?
The severity of CVE-2022-42319 is medium with a severity value of 6.5.
How does CVE-2022-42319 affect Xen and Debian Xen?
CVE-2022-42319 affects Xen versions up to and including 4.11.4+107-gef32c7afa2-1 and Debian Xen versions 11.0.
How does CVE-2022-42319 affect Fedora versions 35, 36, and 37?
CVE-2022-42319 affects Fedora versions 35, 36, and 37.
What is the Common Weakness Enumeration (CWE) for CVE-2022-42319?
The Common Weakness Enumeration (CWE) for CVE-2022-42319 is CWE-401.
Where can I find more information about CVE-2022-42319?
You can find more information about CVE-2022-42319 in the advisories provided by Xen, Debian, and Openwall.