{"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":"2022-03-02T00:00:00.000Z","datePublished":"2022-04-05T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"23aa2041-22e1-471f-9209-9b7396fa234f","shortName":"XEN","dateUpdated":"2024-02-04T08:06:38.987Z"},"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 Monné 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"}]}]}}