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-2025-21977 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 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

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: Undefined Security Weakness

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...

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...

SUSE CVE-2022-49741

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: fix error handling code in ufxusbprobe The current error handling code in ufxusbprobe have many unmatching issues, e.g., missing ufxfreeusblist, destroymodedb label should only include framebufferrelease,...

SUSE CVE-2024-58091

In the Linux kernel, the following vulnerability has been resolved: drm/fbdev-dma: Add shadow buffering for deferred I/O DMA areas are not necessarily backed by struct page, so we cannot rely on it for deferred I/O. Allocate a shadow buffer for drivers that require deferred I/O and use it as...

USN-7383-2 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; - x86 architecture; - Block layer subsystem; - Drivers core; - Ublk userspace block driver; -...

CVE-2022-49741 fbdev: smscufx: fix error handling code in ufx_usb_probe

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: fix error handling code in ufxusbprobe The current error handling code in ufxusbprobe have many unmatching issues, e.g., missing ufxfreeusblist, destroymodedb label should only include framebufferrelease,...

CVE-2022-49741 fbdev: smscufx: fix error handling code in ufx_usb_probe

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: fix error handling code in ufxusbprobe The current error handling code in ufxusbprobe have many unmatching issues, e.g., missing ufxfreeusblist, destroymodedb label should only include framebufferrelease,...

CVE-2022-49741

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: fix error handling code in ufxusbprobe The current error handling code in ufxusbprobe have many unmatching issues, e.g., missing ufxfreeusblist, destroymodedb label should only include framebufferrelease,...

DEBIAN-CVE-2024-58091

In the Linux kernel, the following vulnerability has been resolved: drm/fbdev-dma: Add shadow buffering for deferred I/O DMA areas are not necessarily backed by struct page, so we cannot rely on it for deferred I/O. Allocate a shadow buffer for drivers that require deferred I/O and use it as...

UBUNTU-CVE-2024-58091

In the Linux kernel, the following vulnerability has been resolved: drm/fbdev-dma: Add shadow buffering for deferred I/O DMA areas are not necessarily backed by struct page, so we cannot rely on it for deferred I/O. Allocate a shadow buffer for drivers that require deferred I/O and use it as...

CVE-2024-58091

In CVE-2024-58091, the Linux kernel DRM fbdev code (drm/fbdev-dma) was updated to add a shadow buffer for deferred I/O because DMA areas are not always backed by struct page. The root cause is that deferred I/O cannot reliably rely on struct page backing for those DMA areas, so the fix introduces...

CVE-2024-58091

In the Linux kernel, the following vulnerability has been resolved: drm/fbdev-dma: Add shadow buffering for deferred I/O DMA areas are not necessarily backed by struct page, so we cannot rely on it for deferred I/O. Allocate a shadow buffer for drivers that require deferred I/O and use it as...

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 a lack of shadow buffering in drm fbdev-dma...

The vulnerability of the drm_fb_helper_alloc_info() function in the drivers/gpu/drm/drm_fb_helper.c module of the Linux kernel allows a hacker to cause a service failure.

The vulnerability of the drmfbhelperallocinfo function in the drivers/gpu/drm/drmfbhelper.c module of the Linux kernel is related to improper resource management. Exploiting this vulnerability could allow an attacker to cause service failures...

PT-2025-14357

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to the removal of a Hyper-V framebuffer device. When the device is unbound, the hyperv fb driver attempts to release the...