--- id: CVE-2025-31936 title: >- Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege summary: >- Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege. SMM adversary with a privileged user combined with a high comple… severity: medium cvss: 5.7 cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N' cwe: - CWE-1260 - CWE-1260 vendor: intel product: xeon_6337p_firmware affected: - xeon_6337p_firmware - xeon_6349p_firmware - xeon_6353p_firmware - xeon_6357p_firmware - xeon_6369p_firmware - xeon_6377p_firmware - xeon_6503p_firmware - xeon_6503p-b_firmware - xeon_6505p_firmware - xeon_6507p_firmware - xeon_6511p_firmware - xeon_6513p-b_firmware - xeon_6515p_firmware - xeon_6516p-b_firmware - xeon_6517p_firmware - xeon_6518p-b_firmware - xeon_6520p_firmware - xeon_6521p_firmware - xeon_6523p-b_firmware - xeon_6527p_firmware - xeon_6530p_firmware - xeon_6532p-b_firmware - xeon_6533p-b_firmware - xeon_6543p-b_firmware - xeon_6544p-b_firmware - xeon_6546p-b_firmware - xeon_6548p-b_firmware - xeon_6553p-b_firmware - xeon_6556p-b_firmware - xeon_6563p-b_firmware - xeon_6706p-b_firmware - xeon_6714p_firmware - xeon_6716p-b_firmware - xeon_6718p-b_firmware - xeon_6724p_firmware - xeon_6725p_firmware - xeon_6726p-b_firmware - xeon_6728p_firmware - xeon_6730p_firmware - xeon_6731p_firmware - xeon_6732p_firmware - xeon_6736p_firmware - xeon_6737p_firmware - xeon_6738p_firmware - xeon_6740p_firmware - xeon_6741p_firmware - xeon_6745p_firmware - xeon_6747p_firmware - xeon_6748p_firmware - xeon_6756p-b_firmware - xeon_6760p_firmware - xeon_6761p_firmware - xeon_6766p-b_firmware - xeon_6767p_firmware - xeon_6768p_firmware - xeon_6768p-b_firmware - xeon_6774p_firmware - xeon_6776p_firmware - xeon_6776p-b_firmware - xeon_6781p_firmware - xeon_6787p_firmware - xeon_6788p_firmware - xeon_6944p_firmware - xeon_6952p_firmware - xeon_6960p_firmware - xeon_6962p_firmware - xeon_6972p_firmware - xeon_6978p_firmware - xeon_6979p_firmware - xeon_6980p_firmware - xeon_6315p_firmware - xeon_6325p_firmware - xeon_6333p_firmware published: '2026-08-11' updated: '2026-09-18' sourceUpdated: '2026-09-18T14:05:09.337' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-31936' references: - url: >- https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01379.html label: secure@intel.com - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-31936.json - url: 'https://access.redhat.com/security/cve/CVE-2025-31936' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2514115' - url: 'https://www.cve.org/CVERecord?id=CVE-2025-31936' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-31936' - url: 'https://access.redhat.com/errata/RHSA-2026:67979' - url: 'https://access.redhat.com/errata/RHSA-2026:65147' - url: 'https://access.redhat.com/errata/RHSA-2026:68011' tags: - nvd - csaf - vex - red-hat epss: 0.00098 epssPercentile: 0.00708 ingestedAt: '2026-09-18T14:43:13.027Z' patched: - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_8 - enterprise_linux_baseos_v_9 --- ## Overview Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege. SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts. ## Affected - `xeon_6337p_firmware` - `xeon_6349p_firmware` - `xeon_6353p_firmware` - `xeon_6357p_firmware` - `xeon_6369p_firmware` - `xeon_6377p_firmware` - `xeon_6503p_firmware` - `xeon_6503p-b_firmware` - `xeon_6505p_firmware` - `xeon_6507p_firmware` - `xeon_6511p_firmware` - `xeon_6513p-b_firmware` - `xeon_6515p_firmware` - `xeon_6516p-b_firmware` - `xeon_6517p_firmware` - `xeon_6518p-b_firmware` - `xeon_6520p_firmware` - `xeon_6521p_firmware` - `xeon_6523p-b_firmware` - `xeon_6527p_firmware` - `xeon_6530p_firmware` - `xeon_6532p-b_firmware` - `xeon_6533p-b_firmware` - `xeon_6543p-b_firmware` - `xeon_6544p-b_firmware` - `xeon_6546p-b_firmware` - `xeon_6548p-b_firmware` - `xeon_6553p-b_firmware` - `xeon_6556p-b_firmware` - `xeon_6563p-b_firmware` - `xeon_6706p-b_firmware` - `xeon_6714p_firmware` - `xeon_6716p-b_firmware` - `xeon_6718p-b_firmware` - `xeon_6724p_firmware` - `xeon_6725p_firmware` - `xeon_6726p-b_firmware` - `xeon_6728p_firmware` - `xeon_6730p_firmware` - `xeon_6731p_firmware` - `xeon_6732p_firmware` - `xeon_6736p_firmware` - `xeon_6737p_firmware` - `xeon_6738p_firmware` - `xeon_6740p_firmware` - `xeon_6741p_firmware` - `xeon_6745p_firmware` - `xeon_6747p_firmware` - `xeon_6748p_firmware` - `xeon_6756p-b_firmware` - `xeon_6760p_firmware` - `xeon_6761p_firmware` - `xeon_6766p-b_firmware` - `xeon_6767p_firmware` - `xeon_6768p_firmware` - `xeon_6768p-b_firmware` - `xeon_6774p_firmware` - `xeon_6776p_firmware` - `xeon_6776p-b_firmware` - `xeon_6781p_firmware` - `xeon_6787p_firmware` - `xeon_6788p_firmware` - `xeon_6944p_firmware` - `xeon_6952p_firmware` - `xeon_6960p_firmware` - `xeon_6962p_firmware` - `xeon_6972p_firmware` - `xeon_6978p_firmware` - `xeon_6979p_firmware` - `xeon_6980p_firmware` - `xeon_6315p_firmware` - `xeon_6325p_firmware` - `xeon_6333p_firmware` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:67979** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:67979) - **RHSA-2026:65147** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8) · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65147) - **RHSA-2026:68011** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68011) - **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat OpenShift Container Platform 4 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-31936.json)