XenServer Security Update for Multiple Issues

Severity: High Description of Problem Several issues have been identified that affect XenServer 8.4. These are: An issue that may, in some circumstances, allow a malicious privileged user in a guest VM to compromise the host. This issue has the following identifier: CVE-2026-23558 An issue that m...

PT-2026-61172

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The VCN encoder and decoder rings in the drm/amdgpu/vcn component do not support 64-bit user fence writes. This issue leads to the rejection of CS submissions that utilize user fences...

Linux Distros Unpatched Vulnerability : CVE-2026-31460

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if extcaps is valid in BL setup LVDS connectors don't have extended...

CVE-2025-54505

A transient execution vulnerability within AMD CPUs may allow a local user-privileged attacker to leak data via the floating point divisor unit, potentially resulting in loss of confidentiality...

EUVD-2025-209577

A transient execution vulnerability within AMD CPUs may allow a local user-privileged attacker to leak data via the floating point divisor unit, potentially resulting in loss of confidentiality...

CVE-2025-54505

CVE-2025-54505 corresponds to an AMD FP-DSS vulnerability in the Floating Point Divider (FPU) path. The advisory and related sources describe a transient execution issue in AMD CPUs whereby a local, user-privileged attacker may leak data through the floating point divider unit, with confidentiali...

CVE-2025-54505

A transient execution vulnerability within AMD CPUs may allow a local user-privileged attacker to leak data via the floating point divisor unit, potentially resulting in loss of confidentiality...

CVE-2025-54505: Exposure of Sensitive Information during Transient Execution

A transient execution vulnerability within AMD CPUs may allow a local user-privileged attacker to leak data via the floating point divisor unit, potentially resulting in loss of confidentiality...

Unity Linux 20.1060a Security Update: kernel (UTSA-2026-014345)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014345 advisory. In the Linux kernel, the following vulnerability has been resolved: cpufreq: amd-pstate: add check for cpufreqcpuget's return value cpufreqcpuget may return NULL. To...

PT-2026-51881

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A double free flaw exists in the drm/amdgpu component within the userq validate function. The issue occurs when amdgpu userq vm validate calls the drm exec fini function on an execution...

Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel (Oracle) vulnerabilities (USN-8203-1)

"The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8203-1 advisory. Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly...

USN-8204-1: Linux kernel (Raspberry Pi Real-time) vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

USN-8183-2: Linux kernel vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

SUSE CVE-2026-31460

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if extcaps is valid in BL setup LVDS connectors don't have extended backlight caps so check if the pointer is valid before accessing it. cherry picked from commit 3f797396d7f4eb9bb6eded184bbc6f033628a6f6...

SUSE CVE-2026-31488

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Do not skip unrelated mode changes in DSC validation Starting with commit 17ce8a6907f7 "drm/amd/display: Add dsc pre-validation in atomic check", amdgpu resets the CRTC state modechanged flag to false when...

CVE-2026-31460

A flaw was found in the drm/amd/display component of the Linux kernel. This vulnerability occurs because the system attempts to access extended backlight capabilities without first verifying if the pointer to these capabilities is valid, specifically when dealing with LVDS connectors. An attacker...

EUVD-2026-24799

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if extcaps is valid in BL setup LVDS connectors don't have extended backlight caps so check if the pointer is valid before accessing it. cherry picked from commit 3f797396d7f4eb9bb6eded184bbc6f033628a6f6...

CVE-2026-31460

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if extcaps is valid in BL setup LVDS connectors don't have extended backlight caps so check if the pointer is valid before accessing it. cherry picked from commit 3f797396d7f4eb9bb6eded184bbc6f033628a6f6...

CVE-2026-31461

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix drmedid leak in amdgpudm WHAT When a sink is connected, aconnector-drmedid was overwritten without freeing the previous allocation, causing a memory leak on resume. HOW Free the previous drmedid before updati...

CVE-2026-31462

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: prevent immediate PASID reuse case PASID resue could cause interrupt issue when process immediately runs into hw state left by previous process exited with the same PASID, it's possible that page faults are still...