CVE-2022-26356
Vulnerability from cvelistv5
Published
2022-04-05 00:00
Modified
2024-08-03 05:03
Severity ?
Summary
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.
References
security@xen.orghttp://www.openwall.com/lists/oss-security/2022/04/05/1Mailing List, Patch, Third Party Advisory
security@xen.orghttp://xenbits.xen.org/xsa/advisory-397.htmlPatch, Third Party Advisory
security@xen.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/
security@xen.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
security@xen.orghttps://security.gentoo.org/glsa/202402-07
security@xen.orghttps://www.debian.org/security/2022/dsa-5117Third Party Advisory
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-397.txtThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/04/05/1Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-397.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202402-07
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5117Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xenproject.org/xsa/advisory-397.txtThird Party Advisory
Impacted products
Vendor Product Version
Xen xen
Show details on NVD website


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   },
}


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