The Bug Report - March 2025 Edition

The Bug Report - March 2025 Edition By Jonathan Omakun · April 3, 2025 Why am I here? Welcome to the March 2025 edition of The Bug Report—where the bracket-breaking isn’t just happening on the court. While US college basketball fans are busy filling out brackets and chasing Cinderella stories,...

USN-7407-1 linux-hwe-5.15 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-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...

USN-7401-1: Linux kernel (AWS) vulnerabilities

Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2024-23848 Attila Szász discovered that the HFS+ file system...

USN-7392-3 linux-aws vulnerabilities

Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2024-23848 Attila Szász discovered that the HFS+ file system...

DEBIAN-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

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-2025-21978

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for devic...

DEBIAN-CVE-2025-21978

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for devic...

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-2025-21978

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for devic...

CVE-2025-21978 drm/hyperv: Fix address space leak when Hyper-V DRM device is removed

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for devic...

CVE-2025-21978

CVE-2025-21978 – Linux kernel (drm/hyperv): address space leak in Hyper-V DRM device mapping . The vulnerability occurs when a Hyper-V DRM device is probed: the driver allocates MMIO space for VRAM and maps it as cacheable, but on device removal or probing error path the MMIO space is released wi...

CVE-2025-21978 drm/hyperv: Fix address space leak when Hyper-V DRM device is removed

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for devic...

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-2025-21976

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

CVE-2025-21976 – In the Linux kernel, the hyperv_fb framebuffer driver could leak framebuffer resources if a Hyper-V framebuffer is unbound, triggering warnings and preventing framebuffer release. The fix moves framebuffer and memory release to fb_ops.fb_destroy and replaces manual framebuffer re...

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...