5.6

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Xen ≫ Xen HwPlatformx86 Version >= 4.0.0 < 4.12.0
Xen ≫ Xen HwPlatformx86 Version >= 4.13.0 < 4.14.0
Xen ≫ Xen HwPlatformx86 Version >= 4.15.0 < 4.16.0
Debian ≫ Debian Linux Version11.0
Fedoraproject ≫ Fedora Version34
Fedoraproject ≫ Fedora Version35
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.138
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.6 1.1 4
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
nvd@nist.gov 4 1.9 6.9
AV:L/AC:H/Au:N/C:N/I:N/A:C
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://security.gentoo.org/glsa/202402-07
https://www.debian.org/security/2022/dsa-5117
Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/04/05/1
Patch
Third Party Advisory
Mailing List
http://xenbits.xen.org/xsa/advisory-397.html
Patch
Third Party Advisory
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://xenbits.xenproject.org/xsa/advisory-397.txt
Third Party Advisory