{"id":"CVE-2026-98518","title":"drm/nouveau/dmem: pin VRAM for the whole registered range","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/dmem: pin VRAM for the whole registered range\n\nCommit c32287471077 (\"gpu/drm/nouveau: enable THP support for GPU memory\nmigration\") grew the device-private …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= c3228747107705d47c7e9a03598a434a0380cb73 < 06c69c64686a31783c8bec6495dc22822d38c4ce","Linux >= c3228747107705d47c7e9a03598a434a0380cb73 < 64ca4cdd1031206424e6455f0ae4fb0560d8f46a","Linux 6.19"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:17:36.371Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98518","references":[{"url":"https://git.kernel.org/stable/c/06c69c64686a31783c8bec6495dc22822d38c4ce"},{"url":"https://git.kernel.org/stable/c/64ca4cdd1031206424e6455f0ae4fb0560d8f46a"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.283Z","slug":"CVE-2026-98518","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/dmem: pin VRAM for the whole registered range\n\nCommit c32287471077 (\"gpu/drm/nouveau: enable THP support for GPU memory\nmigration\") grew the device-private region that\nnouveau_dmem_chunk_alloc() registers from DMEM_CHUNK_SIZE to\nDMEM_CHUNK_SIZE * NR_CHUNKS, but left the VRAM buffer object backing that\nregion at DMEM_CHUNK_SIZE.\n\nnouveau_dmem_page_addr() returns chunk->bo->offset plus the page's offset\nwithin the registered region, so every page past the first chunk resolves\nto VRAM outside the buffer object.\n\nSize the buffer object to the region it backs.\n\n## Affected\n\n- `Linux >= c3228747107705d47c7e9a03598a434a0380cb73 < 06c69c64686a31783c8bec6495dc22822d38c4ce`\n- `Linux >= c3228747107705d47c7e9a03598a434a0380cb73 < 64ca4cdd1031206424e6455f0ae4fb0560d8f46a`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}