CVE-2025-21977 fbdev: hyperv_fb: Fix hang in kdump kernel when on Hyper-V Gen 2 VMs

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Fix hang in kdump kernel when on Hyper-V Gen 2 VMs Gen 2 Hyper-V VMs boot via EFI and have a standard EFI framebuffer device. When the kdump kernel runs in such a VM, loading the efifb driver may hang because of...

CVE-2025-21977

CVE-2025-21977 : Linux kernel hyperv_fb vulnerability affecting Gen2 Hyper‑V VMs. When the kdump kernel loads, efifb may hang due to the Hyper‑V framebuffer being moved to a new MMIO address and the kdump screen_info using the original address. Root cause: framebuffer relocation is not reset for ...

CVE-2025-21976 fbdev: hyperv_fb: Allow graceful removal of framebuffer

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Allow graceful removal of framebuffer When a Hyper-V framebuffer device is unbind, hypervfb driver tries to release the framebuffer forcefully. If this framebuffer is in use it produce the following WARN and henc...

CVE-2025-21976 fbdev: hyperv_fb: Allow graceful removal of framebuffer

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Allow graceful removal of framebuffer When a Hyper-V framebuffer device is unbind, hypervfb driver tries to release the framebuffer forcefully. If this framebuffer is in use it produce the following WARN and henc...

CVE-2025-21976

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Allow graceful removal of framebuffer When a Hyper-V framebuffer device is unbind, hypervfb driver tries to release the framebuffer forcefully. If this framebuffer is in use it produce the following WARN and henc...

CVE-2025-21977

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Fix hang in kdump kernel when on Hyper-V Gen 2 VMs Gen 2 Hyper-V VMs boot via EFI and have a standard EFI framebuffer device. When the kdump kernel runs in such a VM, loading the efifb driver may hang because of...

CVE-2025-21977 fbdev: hyperv_fb: Fix hang in kdump kernel when on Hyper-V Gen 2 VMs

In the Linux kernel, the following vulnerability has been resolved: fbdev: hypervfb: Fix hang in kdump kernel when on Hyper-V Gen 2 VMs Gen 2 Hyper-V VMs boot via EFI and have a standard EFI framebuffer device. When the kdump kernel runs in such a VM, loading the efifb driver may hang because of...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the drm hyperv module not unmapping MMIO space when removing a device...

Ubuntu 24.04 LTS : Linux kernel (Low Latency) vulnerabilities (USN-7381-1)

"The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7381-1 advisory. Attila Szsz discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a...

USN-7387-3: Linux kernel (Real-time) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - Supe...

Ubuntu 22.04 LTS : Linux kernel (NVIDIA Tegra) vulnerabilities (USN-7389-1)

"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7389-1 advisory. Attila Szsz discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a...

Ubuntu 24.10 : Linux kernel (Low Latency) vulnerabilities (USN-7380-1)

"The remote Ubuntu 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7380-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in th...

USN-7387-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - Supe...

USN-7387-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-intel-iotg, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - Supe...

USN-7382-1 linux-oem-6.11 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86...

USN-7379-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-6.11, linux-oracle, linux-realtime vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86...

The vulnerability of the Windows Hyper-V hardware virtualization system allows attackers to escalate their privileges.

The vulnerability of the Windows Hyper-V hardware virtualization system is related to buffer overflows in dynamic memory. Exploiting this vulnerability can allow an attacker to gain increased privileges...

CVE-2025-24048

Heap-based buffer overflow in Role: Windows Hyper-V allows an authorized attacker to elevate privileges locally...

CVE-2025-24050

Heap-based buffer overflow in Role: Windows Hyper-V allows an authorized attacker to elevate privileges locally...

CVE-2025-24050

Heap-based buffer overflow in Role: Windows Hyper-V allows an authorized attacker to elevate privileges locally...