{"id":"USN-7866-1","summary":"intel-microcode vulnerabilities","details":"Barak Gross discovered that some Intel® Xeon® processors with SGX enabled\ndid not properly handle buffer restrictions. A local authenticated user\ncould potentially use this issue to escalate their privileges.\n(CVE-2025-20053)\n\nAvinash Maddy discovered that some Intel® processors did not properly\nisolate or compartmentalize the stream cache mechanisms. A local\nauthenticated user could potentially use this issue to escalate their\nprivileges. (CVE-2025-20109)\n\nJoseph Nuzman discovered that some Intel® Xeon® processors did not properly\nmanage references to active allocate resources. A local authenticated user\ncould potentially use this issue to cause a denial of service (system\ncrash). (CVE-2025-21090)\n\nIt was discovered that some Intel® Xeon® 6 processors did not properly\nprovide sufficient granularity of access control in the out of band\nmanagement service module (OOB-MSM). An authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-22839)\n\nIt was discovered that some Intel® Xeon® 6 Scalable processors did not\nproperly handle a specific sequence of processor instructions, leading to\nunexpected behavior. A local authenticated user could potentially use this\nissue to escalate their privileges. (CVE-2025-22840)\n\nJoseph Nuzman discovered that some Intel® Xeon® 6 processors with Intel®\nTrust Domain Extensions (Intel® TDX) did not properly handle overlap\nbetween protected memory ranges. A local authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-22889)\n\nAvraham Shalev discovered that some Intel® Xeon® processors did not\nproperly provide sufficient control flow management in the Alias Checking\nTrusted Module (ACTM) firmware. A local authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-24305)\n\nAviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6\nprocessors when using Intel® SGX or Intel® TDX did not properly protect\nagainst out-of-bounds writes in the memory subsystem. A local authenticated\nuser could potentially use this issue to escalate their privileges.\n(CVE-2025-26403)\n\nAviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6\nprocessors when using Intel® SGX or Intel® TDX did not properly implement\nsecurity checks in the DDRIO configuration. A local authenticated user\ncould potentially use this issue to escalate their privileges.\n(CVE-2025-32086)","modified":"2026-06-25T13:32:31.319219795Z","published":"2025-11-10T20:11:08Z","related":["UBUNTU-CVE-2025-20053","UBUNTU-CVE-2025-20109","UBUNTU-CVE-2025-21090","UBUNTU-CVE-2025-22839","UBUNTU-CVE-2025-22840","UBUNTU-CVE-2025-22889","UBUNTU-CVE-2025-24305","UBUNTU-CVE-2025-26403","UBUNTU-CVE-2025-32086"],"upstream":["CVE-2025-20053","CVE-2025-20109","CVE-2025-21090","CVE-2025-22839","CVE-2025-22840","CVE-2025-22889","CVE-2025-24305","CVE-2025-26403","CVE-2025-32086","UBUNTU-CVE-2025-20053","UBUNTU-CVE-2025-20109","UBUNTU-CVE-2025-21090","UBUNTU-CVE-2025-22839","UBUNTU-CVE-2025-22840","UBUNTU-CVE-2025-22889","UBUNTU-CVE-2025-24305","UBUNTU-CVE-2025-26403","UBUNTU-CVE-2025-32086"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7866-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-20053"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-20109"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-21090"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-22839"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-22840"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-22889"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-24305"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-26403"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-32086"}],"affected":[{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20250812.0ubuntu0.16.04.1+esm1"}]}],"versions":["3.20150121.1","3.20151106.1","3.20170707.1~ubuntu16.04.0","3.20180108.0~ubuntu16.04.2","3.20180108.0+really20170707ubuntu16.04.1","3.20180312.0~ubuntu16.04.1","3.20180425.1~ubuntu0.16.04.1","3.20180425.1~ubuntu0.16.04.2","3.20180807a.0ubuntu0.16.04.1","3.20190514.0ubuntu0.16.04.1","3.20190514.0ubuntu0.16.04.2","3.20190618.0ubuntu0.16.04.1","3.20191112-0ubuntu0.16.04.2","3.20191115.1ubuntu0.16.04.1","3.20191115.1ubuntu0.16.04.2","3.20200609.0ubuntu0.16.04.0","3.20200609.0ubuntu0.16.04.1","3.20201110.0ubuntu0.16.04.1","3.20201110.0ubuntu0.16.04.2","3.20210216.0ubuntu0.16.04.1","3.20210608.0ubuntu0.16.04.1+esm1","3.20220510.0ubuntu0.16.04.1+esm1","3.20230214.0ubuntu0.16.04.1+esm1","3.20230808.0ubuntu0.16.04.1+esm1","3.20231114.0ubuntu0.16.04.1+esm1","3.20240514.0ubuntu0.16.04.1+esm1","3.20240813.0ubuntu0.16.04.1+esm2","3.20240910.0ubuntu0.16.04.1+esm1","3.20241112.0ubuntu0.16.04.1+esm1","3.20250211.0ubuntu0.16.04.1+esm1","3.20250512.0ubuntu0.16.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"intel-microcode","binary_version":"3.20250812.0ubuntu0.16.04.1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-20053"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-20109"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-21090"},{"id":"CVE-2025-22839","severity":[{"score":"CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L","type":"CVSS_V3"},{"score":"CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2025-22840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L"},{"score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-22889"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-24305"},{"severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-26403"},{"id":"CVE-2025-32086","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N"},{"score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7866-1.json"}},{"package":{"name":"intel-microcode","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/intel-microcode?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20250812.0ubuntu0.18.04.1+esm1"}]}],"versions":["3.20170707.1","3.20171117.1","3.20180108.1","3.20180108.1+really20171117.1","3.20180312.0~ubuntu18.04.1","3.20180425.1~ubuntu0.18.04.1","3.20180425.1~ubuntu0.18.04.2","3.20180807a.0ubuntu0.18.04.1","3.20190514.0ubuntu0.18.04.2","3.20190514.0ubuntu0.18.04.3","3.20190618.0ubuntu0.18.04.1","3.20191112-0ubuntu0.18.04.2","3.20191115.1ubuntu0.18.04.1","3.20191115.1ubuntu0.18.04.2","3.20200609.0ubuntu0.18.04.0","3.20200609.0ubuntu0.18.04.1","3.20201110.0ubuntu0.18.04.1","3.20201110.0ubuntu0.18.04.2","3.20210216.0ubuntu0.18.04.1","3.20210608.0ubuntu0.18.04.1","3.20220510.0ubuntu0.18.04.1","3.20220809.0ubuntu0.18.04.1","3.20230214.0ubuntu0.18.04.1","3.20230808.0ubuntu0.18.04.1+esm1","3.20231114.0ubuntu0.18.04.1+esm1","3.20240514.0ubuntu0.18.04.1+esm1","3.20240813.0ubuntu0.18.04.1+esm2","3.20240910.0ubuntu0.18.04.1+esm1","3.20241112.0ubuntu0.18.04.1+esm1","3.20250211.0ubuntu0.18.04.1+esm1","3.20250512.0ubuntu0.18.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20250812.0ubuntu0.18.04.1+esm1","binary_name":"intel-microcode"}],"availability":"Available 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