CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2022-42332
https://notcve.org/view.php?id=CVE-2022-42332
x86 shadow plus log-dirty mode use-after-free In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Shadow mode maintains a pool of memory used for both shadow page tables as well as auxiliary data structures. To migrate or snapshot guests, Xen additionally runs them in so called log-dirty mode. The data structures needed by the log-dirty tracking are part of aformentioned auxiliary data. In order to keep error handling efforts within reasonable bounds, for operations which may require memory allocations shadow mode logic ensures up front that enough memory is available for the worst case requirements. • http://www.openwall.com/lists/oss-security/2023/03/21/1 http://xenbits.xen.org/xsa/advisory-427.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2023/dsa-5378 https://xenbits.xenproject.org/xsa/advisory-427.txt • CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2022-42334
https://notcve.org/view.php?id=CVE-2022-42334
x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334). • http://www.openwall.com/lists/oss-security/2023/03/21/2 http://xenbits.xen.org/xsa/advisory-428.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2023/dsa-5378 https://xenbits.xenproject.org/xsa/advisory-428.txt • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 8.6EPSS: 0%CPEs: 4EXPL: 0CVE-2022-42333
https://notcve.org/view.php?id=CVE-2022-42333
x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334). • http://www.openwall.com/lists/oss-security/2023/03/21/2 http://xenbits.xen.org/xsa/advisory-428.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2023/dsa-5378 https://xenbits.xenproject.org/xsa/advisory-428.txt • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42319
https://notcve.org/view.php?id=CVE-2022-42319
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. • http://www.openwall.com/lists/oss-security/2022/11/01/6 http://xenbits.xen.org/xsa/advisory-416.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42310
https://notcve.org/view.php?id=CVE-2022-42310
Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious guest can create orphaned nodes in the Xenstore data base, as the cleanup after the error will not remove all nodes already created. When the transaction is committed after this situation, nodes without a valid parent can be made permanent in the data base. Xenstore: los invitados pueden crear nodos huérfanos de Xenstore al crear varios nodos dentro de una transacción que genera un error, un invitado malintencionado puede crear nodos huérfanos en la base de datos de Xenstore, ya que la limpieza después del error no eliminará todos los nodos ya creados. Cuando la transacción se confirma después de esta situación, los nodos sin un padre válido pueden hacerse permanentes en la base de datos. • http://www.openwall.com/lists/oss-security/2022/11/01/5 http://xenbits.xen.org/xsa/advisory-415.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https:// • CWE-459: Incomplete Cleanup •