CVE-2026-23553 x86: incomplete IBPB for vCPU isolation

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

CVE-2026-23553

The Xen hypervisor contains a flaw in its context switch logic where it attempts to skip an Indirect Branch Prediction Barrier (IBPB) when a vCPU returns to a CPU where it was the previous vCPU to run. While this maintains isolation between vCPUs, it prevents the guest kernel from correctly isola...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection via the soupmessageheaderssetcontentdisposition function. An attacker can inject arbitrary HTTP headers by supplying specially crafted input containing CRLF sequences to the Content-Disposition header. Remediation A fix w...

CVE-2026-23553

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

Xen security vulnerabilities

Xen is an open-source virtual machine monitor product developed by Xen. This product allows different and incompatible operating systems to run on the same computer. It also supports migration during runtime, ensuring smooth operation and avoiding downtime. Xen has security vulnerabilities; these...

Security update for xen

This update for xen fixes the following issues: CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747 Special Instructions and Notes: Please reboot the system after installing this update...

SUSE-SU-2026:0306-1 Security update for xen

This update for xen fixes the following issues: - CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 - CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747...

SUSE-SU-2026:0304-1 Security update for xen

This update for xen fixes the following issues: - CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 - CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747...

SUSE-SU-2026:0303-1 Security update for xen

This update for xen fixes the following issues: Security fixes: - CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing XSA-477 bsc1256745 - CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation XSA-479 bsc1256747 - CVE-2025-58149: Fixed incorrect removal od permissions on PCI...

x86: incomplete IBPB for vCPU isolation

ISSUE DESCRIPTION In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CP...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop via the NoCloseOutputStream process. An attacker can cause the application to enter an infinite loop and exhaust system resources by sending specially crafted input to the affected stream writer. Remediation A fix was push...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound via improper validation in the SeekableOutputStream process. An attacker can cause memory corruption or execute arbitrary code by providing specially crafted PNG files. Remediation A fix was pushed into th...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read via the parseheader function. An attacker can cause application instability or denial of service by supplying a specially crafted treemagic file that triggers a buffer underflow and out-of-bounds memory access...

CVE-2025-69564

code-projects Mobile Shop Management System 1.0 is vulnerable to SQL Injection in /ExAddNewUser.php via the Name, Address, email, UserName, Password, confirmpassword, Role, Branch, and Activate parameters...

Out-of-bounds Write

Overview Affected versions of this package are vulnerable to Out-of-bounds Write via the realtolower and outputmarks functions. An attacker can cause memory corruption and potentially crash or destabilize applications by submitting specially crafted and extremely large Unicode strings. Remediatio...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection via the BytesGenerator class in the email module due to unquoted newlines when serializing an email message. An attacker could perform email spoofing, data exfiltration, or content manipulation by injecting malicious CRLF...

Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion in the ParseDict function, when handling deeply nested google.protobuf.Any messages. An attacker can bypass maxrecursiondepth to exhaust the recursion stack and trigger a RecursionError. Remediation Upgrade protob...

Uncontrolled Recursion

Overview protobuf is a Google’s data interchange format Affected versions of this package are vulnerable to Uncontrolled Recursion in the ParseDict function, when handling deeply nested google.protobuf.Any messages. An attacker can bypass maxrecursiondepth to exhaust the recursion stack and trigg...