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Findings

CVE-2026-80887

drm/vmwgfx: use check_add_overflow for shader size+offset bound

Published Sep 4, 2026 · updated Oct 14, 2026

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size guest_memory_offset and forwarded to host SVGA shader-create commands. Use check_add_overflow() to detect the wrap and compare the resulting endpoint against the buffer size.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 4, 2026 · OSV.dev

    Detected

    In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size guest_memory_offset and forwarded to host SVGA shader-create commands. Use check_add_overflow() to detect the wrap and compare the resulting endpoi

  2. Oct 14, 2026 · OSV.dev

    Fix available

    Kernel fixed in 6.6.151

  3. Oct 14, 2026 · OSV.dev

    Fix available

    Kernel fixed in 6.6.151

  4. Oct 14, 2026 · OSV.dev

    Updated

    In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size guest_memory_offset and forwarded to host SVGA shader-create commands. Use check_add_overflow() to detect the wrap and compare the resulting endpoi

Affected

  • Linux Kernel6.4.0 → 6.6.151

Sources

References