{"id":"CVE-2026-68257","revision":"f903476fe5a84cf2b76be89daa534721","records":[{"revision":"f903476fe5a84cf2b76be89daa534721","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68257","aliases":[],"title":"drm/amdkfd: fix 32-bit overflow in CWSR total size calculation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix 32-bit overflow in CWSR total size calculation\n\ntotal_cwsr_size was computed in 32-bit before being used as a BO/SVM\nallocation size.\nWith large ctx_save_restore_area_size and debug_memory_size\nmultiplied by the XCC count, the product can wrap,\nyielding an undersized CWSR save area that firmware later overruns.\n\nPromote total_cwsr_size to u64 and use check_add_overflow()/\ncheck_mul_overflow() in both kfd_queue_acquire_buffers() and\nkfd_queue_release_buffers().\n\n(cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)","state":0,"publishedAt":"2026-08-10T12:01:30.547+00:00","modifiedAt":"2026-10-19T20:58:58.377+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/amd/amdkfd/kfd_queue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"325aa07165394b8e866ffe9ec1d4c99d9195b2f2\",\n                            \"lessThan\": \"b88ffe6593607364a8c06a48c6f29e55437cdf8e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d15deafab5d722afb9e2f83c5edcdef9d9d98bd1\",\n                            \"lessThan\": \"abce3276c57e36c955627307469b9f009057a467\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d15deafab5d722afb9e2f83c5edcdef9d9d98bd1\",\n                            \"lessThan\": \"865532d54eb57b660b1cb1b0e1755776ce21b849\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d15deafab5d722afb9e2f83c5edcdef9d9d98bd1\",\n                            \"lessThan\": \"2b0386d4293920e690c0e017708f999b93cc729b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"63600103d2ac5c09fdeec5b931b396e4e0efd5d8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.12.59\",\n                            \"lessThan\": \"6.12.101\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.9\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/amd/amdkfd/kfd_queue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/b88ffe6593607364a8c06a48c6f29e55437cdf8e","https://git.kernel.org/stable/c/abce3276c57e36c955627307469b9f009057a467","https://git.kernel.org/stable/c/865532d54eb57b660b1cb1b0e1755776ce21b849","https://git.kernel.org/stable/c/2b0386d4293920e690c0e017708f999b93cc729b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68257","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68257","identifiers":["CVE-2026-68257"]},"retained":false,"historicalAffected":[]}],"coverage":[]}