{"id":"CVE-2026-98518","revision":"6af9558899384cb0bc1d51bd14fb283e","records":[{"revision":"6af9558899384cb0bc1d51bd14fb283e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98518","aliases":[],"title":"drm/nouveau/dmem: pin VRAM for the whole registered range","description":"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 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.","state":0,"publishedAt":"2026-10-18T15:17:36.371+00:00","modifiedAt":"2026-10-19T09:20:59.258+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/nouveau/nouveau_dmem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c3228747107705d47c7e9a03598a434a0380cb73\",\n                            \"lessThan\": \"06c69c64686a31783c8bec6495dc22822d38c4ce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c3228747107705d47c7e9a03598a434a0380cb73\",\n                            \"lessThan\": \"64ca4cdd1031206424e6455f0ae4fb0560d8f46a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/nouveau/nouveau_dmem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/06c69c64686a31783c8bec6495dc22822d38c4ce","https://git.kernel.org/stable/c/64ca4cdd1031206424e6455f0ae4fb0560d8f46a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98518","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98518","identifiers":["CVE-2026-98518"]},"retained":false,"historicalAffected":[]}],"coverage":[]}