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: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2022-42330
https://notcve.org/view.php?id=CVE-2022-42330
Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g. for performing a kexec) the libxl based Xen toolstack will normally perform a XS_RELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XS_RELEASE will have the same impact. Los invitados pueden provocar un fallo de Xenstore mediante un reinicio por software Cuando un invitado emite un "Reinicio por software" (por ejemplo, para realizar un kexec), la pila de herramientas de Xen basada en libxl normalmente realizará una operación XS_RELEASE de Xenstore. Debido a un error en xenstored, esto puede provocar un fallo de xenstored. • https://security.gentoo.org/glsa/202402-07 https://xenbits.xenproject.org/xsa/advisory-425.txt •
CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 0CVE-2022-42327
https://notcve.org/view.php?id=CVE-2022-42327
x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests. x86: intercambio de memoria no deseado entre invitados En los sistemas Intel que admiten la función "virtualizar accesos APIC", un invitado puede leer y escribir la página xAPIC compartida global sacando el APIC local del modo xAPIC. El acceso a esta página compartida evita el aislamiento esperado que debería existir entre dos invitados. • http://www.openwall.com/lists/oss-security/2022/11/01/3 http://xenbits.xen.org/xsa/advisory-412.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/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ https://security.gentoo.org/glsa/202402-07 https://xenbits.xenproject.org/xsa/advisory-412.txt •
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 •
CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-33746
https://notcve.org/view.php?id=CVE-2022-33746
P2M pool freeing may take excessively long The P2M pool backing second level address translation for guests may be of significant size. Therefore its freeing may take more time than is reasonable without intermediate preemption checks. Such checking for the need to preempt was so far missing. La liberación del pool P2M puede tardar demasiado El pool P2M que respalda la traducción de direcciones de segundo nivel para huéspedes puede tener un tamaño considerable. Por lo tanto, su liberación puede tomar más tiempo de lo que es razonable sin comprobaciones intermedias de preferencia. • http://www.openwall.com/lists/oss-security/2022/10/11/3 http://xenbits.xen.org/xsa/advisory-410.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE https://security.gentoo.org/glsa/202402-07 https:// • CWE-404: Improper Resource Shutdown or Release •