CVE-2025-21090

Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.

Security Fix(es):

Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmware with SGX enabled may allow a privileged user to potentially enable escalation of privilege via local access.(CVE-2025-20053)

Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.(CVE-2025-20109)

Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.(CVE-2025-21090)

Insufficient granularity of access control in the OOB-MSM for some Intel(R) Xeon(R) 6 Scalable processors may allow a privileged user to potentially enable escalation of privilege via adjacent access.(CVE-2025-22839)

Sequence of processor instructions leads to unexpected behavior for some Intel(R) Xeon(R) 6 Scalable processors may allow an authenticated user to potentially enable escalation of privilege via local access(CVE-2025-22840)

Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processor with Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.(CVE-2025-22889)

Insufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware for some Intel(R) Xeon(R) processors may allow a privileged user to potentially enable escalation of privilege via local access.(CVE-2025-24305)

Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6 processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.(CVE-2025-26403)

Improperly implemented security check for standard in the DDRIO configuration for some Intel(R) Xeon(R) 6 Processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.(CVE-2025-32086)

Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.

Missing reference to active allocated resource for some Intel(R) Xeon(R) processors may allow an authenticated user to potentially enable denial of service via local access.

The updated package updates AMD cpu microcode for processor family 19h, adds AMD cpu microcode for processor family 1ah and fixes security vulnerabilities for Intel processors: Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel® Processors may allow an authenticated user to potentially enable escalation of privilege via local access. (CVE-2025-20109) Sequence of processor instructions leads to unexpected behavior for some Intel® Xeon® 6 Scalable processors may allow an authenticated user to potentially enable escalation of privilege via local access. (CVE-2025-22840) Insufficient granularity of access control in the OOB-MSM for some Intel® Xeon® 6 Scalable processors may allow a privileged user to potentially enable escalation of privilege via adjacent access. (CVE-2025-22839) Improper handling of overlap between protected memory ranges for some Intel® Xeon® 6 processor with Intel® TDX may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2025-22889) Improper buffer restrictions for some Intel® Xeon® Processor firmware with SGX enabled may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2025-20053) Insufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware for some Intel® Xeon® processors may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2025-24305) Missing reference to active allocated resource for some Intel® Xeon® processors may allow an authenticated user to potentially enable denial of service via local access. (CVE-2025-21090) Out-of-bounds write in the memory subsystem for some Intel® Xeon® 6 processors when using Intel® SGX or Intel® TDX may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2025-26403) Improperly implemented security check for standard in the DDRIO configuration for some Intel® Xeon® 6 Processors when using Intel® SGX or Intel® TDX may allow a privileged user to potentially enable escalation of privilege via local access. (CVE-2025-32086)

Barak Gross discovered that some Intel® Xeon® processors with SGX enabled did not properly handle buffer restrictions. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-20053)

Avinash Maddy discovered that some Intel® processors did not properly isolate or compartmentalize the stream cache mechanisms. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-20109)

Joseph Nuzman discovered that some Intel® Xeon® processors did not properly manage references to active allocate resources. A local authenticated user could potentially use this issue to cause a denial of service (system crash). (CVE-2025-21090)

It was discovered that some Intel® Xeon® 6 processors did not properly provide sufficient granularity of access control in the out of band management service module (OOB-MSM). An authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22839)

It was discovered that some Intel® Xeon® 6 Scalable processors did not properly handle a specific sequence of processor instructions, leading to unexpected behavior. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22840)

Joseph Nuzman discovered that some Intel® Xeon® 6 processors with Intel® Trust Domain Extensions (Intel® TDX) did not properly handle overlap between protected memory ranges. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-22889)

Avraham Shalev discovered that some Intel® Xeon® processors did not properly provide sufficient control flow management in the Alias Checking Trusted Module (ACTM) firmware. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-24305)

Aviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6 processors when using Intel® SGX or Intel® TDX did not properly protect against out-of-bounds writes in the memory subsystem. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-26403)

Aviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6 processors when using Intel® SGX or Intel® TDX did not properly implement security checks in the DDRIO configuration. A local authenticated user could potentially use this issue to escalate their privileges. (CVE-2025-32086)