{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2022-26356", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "dateUpdated": "2024-08-03T05:03:32.753Z", "dateReserved": "2022-03-02T00:00:00", "datePublished": "2022-04-05T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2024-02-04T08:06:38.987009"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Xen", "product": "xen", "versions": [{"version": "consult Xen advisory XSA-397", "status": "unknown"}]}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-397.txt"}, {"url": "http://xenbits.xen.org/xsa/advisory-397.html"}, {"name": "[oss-security] 20220405 Xen Security Advisory 397 v2 (CVE-2022-26356) - Racy interactions between dirty vram tracking and paging log dirty hypercalls", "tags": ["mailing-list"], "url": "http://www.openwall.com/lists/oss-security/2022/04/05/1"}, {"name": "DSA-5117", "tags": ["vendor-advisory"], "url": "https://www.debian.org/security/2022/dsa-5117"}, {"name": "FEDORA-2022-dfbf7e2372", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/"}, {"name": "FEDORA-2022-64b2c02d29", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/"}, {"name": "GLSA-202402-07", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202402-07"}], "credits": [{"lang": "en", "value": "{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Roger Pau Monn\u00e9 of Citrix.'}]}}}"}], "metrics": [{"other": {"type": "unknown", "content": {"description": {"description_data": [{"lang": "eng", "value": "An attacker can cause Xen to leak memory, eventually leading to a Denial of\nService (DoS) affecting the entire host."}]}}}}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "unknown"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T05:03:32.753Z"}, "title": "CVE Program Container", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-397.txt", "tags": ["x_transferred"]}, {"url": "http://xenbits.xen.org/xsa/advisory-397.html", "tags": ["x_transferred"]}, {"name": "[oss-security] 20220405 Xen Security Advisory 397 v2 (CVE-2022-26356) - Racy interactions between dirty vram tracking and paging log dirty hypercalls", "tags": ["mailing-list", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2022/04/05/1"}, {"name": "DSA-5117", "tags": ["vendor-advisory", "x_transferred"], "url": "https://www.debian.org/security/2022/dsa-5117"}, {"name": "FEDORA-2022-dfbf7e2372", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/"}, {"name": "FEDORA-2022-64b2c02d29", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/"}, {"name": "GLSA-202402-07", "tags": ["vendor-advisory", "x_transferred"], "url": "https://security.gentoo.org/glsa/202402-07"}]}]}}

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