Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Shmem writes are flushed before mapping buffers with cached mappings. The shmem layer zeroes out new pages using cached mappings. If we do not flush these writes using the CPU, we might leave dirty cachelines behind,...

DEBIAN-CVE-2025-40276

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Flush shmem writes before mapping buffers CPU-uncached The shmem layer zeroes out the new pages using cached mappings, and if we don't CPU-flush we might leave dirty cachelines behind, leading to potential data leaks...

CVE-2025-40276 drm/panthor: Flush shmem writes before mapping buffers CPU-uncached

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Flush shmem writes before mapping buffers CPU-uncached The shmem layer zeroes out the new pages using cached mappings, and if we don't CPU-flush we might leave dirty cachelines behind, leading to potential data leaks...

CVE-2025-40276

CVE-2025-40276 affects the Linux kernel Panthor DRM driver (drivers/gpu/drm/panthor/panthor_gem.c). The vulnerability arises from flushing shmem writes before mapping buffers; shmem currently zeroes new pages using cached mappings and, without a CPU flush, can leave dirty cachelines behind. This ...