{"id":"CVE-2026-74445","state":"PUBLISHED","title":"drm/vmwgfx: reject DX_BIND_QUERY without a DX context","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: reject DX_BIND_QUERY without a DX context\n\nvmw_cmd_dx_bind_query() unconditionally dereferences\nsw_context->dx_ctx_node->ctx.  Userspace can trigger a NULL pointer\ndereference from any render-node fd by submitting an execbuf with\ndx_context_handle == SVGA3D_INVALID_ID and a SVGA_3D_CMD_DX_BIND_QUERY\nopcode in the command stream: dx_ctx_node is left NULL and the kernel\noopses on the assignment.  The same NULL is then re-read in\nvmw_resources_reserve() via vmw_context_get_dx_query_mob().\n\nAll sibling DX handlers fail-close on a missing dx_ctx_node using\nVMW_GET_CTX_NODE().  Use the same pattern here, returning -EINVAL up\nfront before any relocation state is published.","publishedAt":"2026-08-15T12:26:52.063Z","updatedAt":"2026-10-30T12:30:04.210Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"6af8f0571b4f07e9b102641f195e0ae3cd3a6c71","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"7eae011829f94a76470ec76f016805f508437755","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"0634d50e8b398c25bd07c96b048e484d22688c26","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"e479240a1e076ba1104236331abd62400bf1d495","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"6b1eb0b63cc153e1c0cb5ab8350950119be11947","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"]}],"references":["https://git.kernel.org/stable/c/6af8f0571b4f07e9b102641f195e0ae3cd3a6c71","https://git.kernel.org/stable/c/7eae011829f94a76470ec76f016805f508437755","https://git.kernel.org/stable/c/0634d50e8b398c25bd07c96b048e484d22688c26","https://git.kernel.org/stable/c/e479240a1e076ba1104236331abd62400bf1d495","https://git.kernel.org/stable/c/6b1eb0b63cc153e1c0cb5ab8350950119be11947","https://git.kernel.org/stable/c/55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db"],"weaknesses":[],"ingestedAt":"2026-10-30T12:48:04.825Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74445.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74445","state":"PUBLISHED","datePublished":"2026-08-15T12:26:52.063Z","dateUpdated":"2026-10-30T12:30:04.210Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.898Z"},"containers":{"cna":{"title":"drm/vmwgfx: reject DX_BIND_QUERY without a DX context","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: reject DX_BIND_QUERY without a DX context\n\nvmw_cmd_dx_bind_query() unconditionally dereferences\nsw_context->dx_ctx_node->ctx.  Userspace can trigger a NULL pointer\ndereference from any render-node fd by submitting an execbuf with\ndx_context_handle == SVGA3D_INVALID_ID and a SVGA_3D_CMD_DX_BIND_QUERY\nopcode in the command stream: dx_ctx_node is left NULL and the kernel\noopses on the assignment.  The same NULL is then re-read in\nvmw_resources_reserve() via vmw_context_get_dx_query_mob().\n\nAll sibling DX handlers fail-close on a missing dx_ctx_node using\nVMW_GET_CTX_NODE().  Use the same pattern here, returning -EINVAL up\nfront before any relocation state is published."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"6af8f0571b4f07e9b102641f195e0ae3cd3a6c71","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"7eae011829f94a76470ec76f016805f508437755","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"0634d50e8b398c25bd07c96b048e484d22688c26","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"e479240a1e076ba1104236331abd62400bf1d495","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"6b1eb0b63cc153e1c0cb5ab8350950119be11947","versionType":"git"},{"version":"9c079b8ce8bf8e0394149eb39c78b04285644bcc","status":"affected","lessThan":"55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6af8f0571b4f07e9b102641f195e0ae3cd3a6c71"},{"url":"https://git.kernel.org/stable/c/7eae011829f94a76470ec76f016805f508437755"},{"url":"https://git.kernel.org/stable/c/0634d50e8b398c25bd07c96b048e484d22688c26"},{"url":"https://git.kernel.org/stable/c/e479240a1e076ba1104236331abd62400bf1d495"},{"url":"https://git.kernel.org/stable/c/6b1eb0b63cc153e1c0cb5ab8350950119be11947"},{"url":"https://git.kernel.org/stable/c/55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:30:04.210Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}