CVE-2025-40323 fbcon: Set fb_display[i]->mode to NULL when the mode is released

In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fbdisplayi-mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in fbmodeisequal+0x285/0x2f0 Read of size 4 at addr ff11000001b3c69c by...

CVE-2025-40323

CVE-2025-40323: The issue affects the Linux kernel fbcon framebuffer handling. A use-after-free can occur because during framebuffer unregistration only fb_info->modelist memory is freed, while fb_display[i]->mode is not NULL’d for the freed modes. This can lead to dereferencing a freed poi...

CVE-2025-40323

In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fbdisplayi-mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in fbmodeisequal+0x285/0x2f0 Read of size 4 at addr ff11000001b3c69c by...

CVE-2025-40323

In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fbdisplayi-mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in fbmodeisequal+0x285/0x2f0 Read of size 4 at addr ff11000001b3c69c by...

CVE-2025-40322 fbdev: bitblit: bound-check glyph index in bit_putcs*

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitputcs bitputcsaligned/unaligned derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font's glyph count and read past the end of the...

CVE-2025-40322

The CVE-2025-40322 issue affects the Linux kernel fbdev font handling. The bound-check for glyph indices in bit_putcs_aligned() and bit_putcs_unaligned() derived the glyph pointer from the character value masked by 0xff/0x1ff, which could exceed the font’s glyph count and cause an out-of-bounds r...

CVE-2025-40322 fbdev: bitblit: bound-check glyph index in bit_putcs*

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitputcs bitputcsaligned/unaligned derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font's glyph count and read past the end of the...

CVE-2025-40304

CVE-2025-40304 corresponds to a Linux kernel vulnerability in the fbdev path, where an insufficient bounds check in the function used to render text (bit_putcs) allowed an out-of-bounds write to vmalloc-ed memory when drawing near framebuffer edges. The root cause was a mismatch between the alloc...

CVE-2025-40304 fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

In the Linux kernel, the following vulnerability has been resolved: fbdev: Add bounds checking in bitputcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering text near screen edges. Return early if the Y position is off-screen and clip...

CVE-2025-40304 fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

In the Linux kernel, the following vulnerability has been resolved: fbdev: Add bounds checking in bitputcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering text near screen edges. Return early if the Y position is off-screen and clip...

CVE-2025-40304

In the Linux kernel, the following vulnerability has been resolved: fbdev: Add bounds checking in bitputcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering text near screen edges. Return early if the Y position is off-screen and clip...

Linux Distros Unpatched Vulnerability : CVE-2025-40323

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fbcon: Set fbdisplayi-mode to NULL when the mode is released Recently, we discovered the following issue through syzkaller: BUG: KASAN: slab-use-after-free in...

Linux Distros Unpatched Vulnerability : CVE-2025-40304

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fbdev: Add bounds checking in bitputcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering text near...

kernel: drm/gem: Acquire references on GEM handles for framebuffers

In the Linux kernel, the following vulnerability has been resolved: drm/gem: Acquire references on GEM handles for framebuffers A GEM handle can be released while the GEM buffer object is attached to a DRM framebuffer. This leads to the release of the dma-buf backing the buffer object, if any. 1...

USN-7909-2 linux-intel-iot-realtime, 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: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S39...

USN-7879-4 linux-gcp-6.14, linux-raspi vulnerabilities

It was discovered that improper initialization of CPU cache memory could allow a local attacker with hypervisor access to overwrite SEV-SNP guest memory resulting in loss of data integrity. CVE-2024-36331 Several security issues were discovered in the Linux kernel. An attacker could possibly use...

USN-7774-1 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-oracle, linux-raspi, linux-xilinx-zynqmp 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; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Serial ATA and Parallel ATA...

The vulnerability of the do_register_framebuffer() function in the fbdev/core/fbmem.c file of the Linux kernel allows a attacker to compromise the integrity and accessibility of the protected information.

The vulnerability of the doregisterframebuffer function in the fbdev/core/fbmem.c file of the Linux kernel relates to writing beyond the buffer boundaries. Exploiting this vulnerability allows an attacker to compromise the integrity and accessibility of the protected information...

Vulnerability of the vmw_framebuffer_surface_create_handle() function in the drivers/gpu/drm/vmwgfx/vmwgfx_kms.c module – A driver for supporting Direct Rendering Infrastructure (DRI) in Linux kernels, which allows a hacker to cause a service failure.

Vulnerability of the vmwframebuffersurfacecreatehandle function in the drivers/gpu/drm/vmwgfx/vmwgfxkms.c module – The Linux kernel’s DRI driver support mechanism relies on pointer manipulation. Exploiting this vulnerability could allow an attacker to cause a system failure...

kernel: drm/gem: Acquire references on GEM handles for framebuffers

In the Linux kernel, the following vulnerability has been resolved: drm/gem: Acquire references on GEM handles for framebuffers A GEM handle can be released while the GEM buffer object is attached to a DRM framebuffer. This leads to the release of the dma-buf backing the buffer object, if any. 1...