NotCVE - vendor:"Xen" product:"Xen" version:"4.15.0"

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CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0

CVE-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: 0

CVE-2022-42333

https://notcve.org/view.php?id=CVE-2022-42333

CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0

CVE-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 •

CVSS: 5.6EPSS: 0%CPEs: 6EXPL: 0

CVE-2022-26356

https://notcve.org/view.php?id=CVE-2022-26356

Racy interactions between dirty vram tracking and paging log dirty hypercalls Activation of log dirty mode done by XEN_DMOP_track_dirty_vram (was named HVMOP_track_dirty_vram before Xen 4.9) is racy with ongoing log dirty hypercalls. A suitably timed call to XEN_DMOP_track_dirty_vram can enable log dirty while another CPU is still in the process of tearing down the structures related to a previously enabled log dirty mode (XEN_DOMCTL_SHADOW_OP_OFF). This is due to lack of mutually exclusive locking between both operations and can lead to entries being added in already freed slots, resulting in a memory leak. Una activación del modo de registro sucio realizada por XEN_DMOP_track_dirty_vram (es llamada HVMOP_track_dirty_vram antes de Xen versión 4.9) es producido con las hiperllamadas de registro sucio en curso. Una llamada a XEN_DMOP_track_dirty_vram con el tiempo apropiado puede habilitar log dirty mientras otra CPU está todavía en el proceso de desmontar las estructuras relacionadas con un modo log dirty previamente habilitado (XEN_DOMCTL_SHADOW_OP_OFF). • http://www.openwall.com/lists/oss-security/2022/04/05/1 http://xenbits.xen.org/xsa/advisory-397.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2022/dsa-5117 https://xenbits.xenproject.org/xsa/advisory-397.txt • CWE-667: Improper Locking •

CVSS: 7.0EPSS: 0%CPEs: 5EXPL: 0

CVE-2022-26357

https://notcve.org/view.php?id=CVE-2022-26357

race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide. VT-d hardware may allow for only less than 15 bits to hold a domain ID associating a physical device with a particular domain. Therefore internally Xen domain IDs are mapped to the smaller value range. The cleaning up of the housekeeping structures has a race, allowing for VT-d domain IDs to be leaked and flushes to be bypassed. Una carrera en la limpieza del ID de dominio de VT-d Los ID de dominio de Xen presentan hasta 15 bits de ancho. • http://www.openwall.com/lists/oss-security/2022/04/05/2 http://xenbits.xen.org/xsa/advisory-399.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2022/dsa-5117 https://xenbits.xenproject.org/xsa/advisory-399.txt • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

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