xen: Xenstore: Guests can cause Xenstore to not free temporary memory When working on a request of a guest, xenstored migh...
CVE-2022-42319 is fixed in xen on 1 platform, first by DEBIAN-CVE-2022-42319, released November 1, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xen · Debian 12.15 (bookworm) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42319 | Nov 1, 2022 |
| xen · Debian 13.5 (trixie) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42319 | Nov 1, 2022 |
| xen · Debian 14 | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42319 | Nov 1, 2022 |
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