{"id":"CVE-2026-74443","revision":"b4a6c5a84a374629bb8d8fdcdadc656b","records":[{"revision":"b4a6c5a84a374629bb8d8fdcdadc656b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74443","aliases":[],"title":"drm/vmwgfx: bound DMA command body size against suffix pointer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: bound DMA command body size against suffix pointer\n\nvmw_cmd_dma() locates the DMA suffix at\n\n\t(unsigned long) &cmd->body + header->size - sizeof(*suffix)\n\nwithout checking that header->size is large enough to contain both\ncmd->body and the suffix.  An undersized header makes the suffix\npointer underflow back into the previous command in the bounce\nbuffer.  The verifier later writes suffix->maximumOffset, clobbering\nverified fields of an already-relocated earlier command -- a TOCTOU\non the device-visible command stream that lets one command rewrite\nanother's GMR id, surface id, or other authenticated fields.\n\nReject the command if the body is too small for the suffix to fit.","state":0,"publishedAt":"2026-08-15T12:26:50.826+00:00","modifiedAt":"2026-10-16T19:05:45.672+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/vmwgfx/vmwgfx_execbuf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"eb20f418933bea53375843b27b4022c1810be63b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"fcd1e56e7816b31a1050ccc67df722b20f6bb15d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"a4a37080a5ac777b59306cfcdf854cc05d7604d4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"036e16ada95389bdc30f41068af04c1d0872fad0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"9759da60e38d7b9db44dc92713e4e0391883d221\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4e4ddd47774313accc86b233d6ca2c6a9037a671\",\n                            \"lessThan\": \"f4f1db96bfd68b81053693ba53405b6f510ac16c\",\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/vmwgfx/vmwgfx_execbuf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.33\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.33\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\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:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/eb20f418933bea53375843b27b4022c1810be63b","https://git.kernel.org/stable/c/fcd1e56e7816b31a1050ccc67df722b20f6bb15d","https://git.kernel.org/stable/c/a4a37080a5ac777b59306cfcdf854cc05d7604d4","https://git.kernel.org/stable/c/036e16ada95389bdc30f41068af04c1d0872fad0","https://git.kernel.org/stable/c/d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7","https://git.kernel.org/stable/c/7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6","https://git.kernel.org/stable/c/9759da60e38d7b9db44dc92713e4e0391883d221","https://git.kernel.org/stable/c/f4f1db96bfd68b81053693ba53405b6f510ac16c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74443","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74443","identifiers":["CVE-2026-74443"]},"retained":false,"historicalAffected":[]}],"coverage":[]}