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.

Link	Resource
https://xenbits.xenproject.org/xsa/advisory-397.txt	Third Party Advisory
http://xenbits.xen.org/xsa/advisory-397.html	Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/04/05/1	Mailing List Patch
https://www.debian.org/security/2022/dsa-5117	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

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Published : 2022-04-05 01:15

Updated : 2022-07-29 06:59

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NVD link : CVE-2022-26356

Mitre link : CVE-2022-26356

No products.

CWE-772