{"id":"CVE-2026-74574","revision":"2acd14828b484a6194810d97ea0386d8","records":[{"revision":"2acd14828b484a6194810d97ea0386d8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74574","aliases":[],"title":"dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()\n\nThe failed_dev_add and failed_dev_name paths drop the file-device\nreference while wq->wq_lock is still held. If put_device(fdev) drops the\nlast reference, idxd_file_dev_release() runs synchronously and tries to\ntake wq->wq_lock again, deadlocking.\n\nThose paths also fall through into the later ctx cleanup labels even\nthough idxd_file_dev_release() owns that cleanup and frees ctx. This can\nmake idxd_xa_pasid_remove(ctx) and kfree(ctx) operate on a freed context.\n\nMove idxd_wq_get() before file-device setup can fail, since the release\ncallback always calls idxd_wq_put(). Then unlock wq->wq_lock before\nput_device(fdev) and return directly from the file-device setup failure\npath, leaving ctx cleanup to the release callback.","state":0,"publishedAt":"2026-08-15T12:28:12.558+00:00","modifiedAt":"2026-10-16T19:05:57.115+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/dma/idxd/cdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec\",\n                            \"lessThan\": \"778ccbded2c8749c5be7f0dfa04fc9977a36fb7e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec\",\n                            \"lessThan\": \"8d5d28285728be47c82fdf1c48be4268293c90e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec\",\n                            \"lessThan\": \"0679c0c189d2548f00e1bac95be28e2df5c6c7f7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec\",\n                            \"lessThan\": \"6e26a41c4c1a706edaaa7c7dffc6b3b945707a55\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec\",\n                            \"lessThan\": \"ee1d7274102285d78a53161fc705a8d8cd40b066\",\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/dma/idxd/cdev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.4\",\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:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/778ccbded2c8749c5be7f0dfa04fc9977a36fb7e","https://git.kernel.org/stable/c/8d5d28285728be47c82fdf1c48be4268293c90e7","https://git.kernel.org/stable/c/0679c0c189d2548f00e1bac95be28e2df5c6c7f7","https://git.kernel.org/stable/c/6e26a41c4c1a706edaaa7c7dffc6b3b945707a55","https://git.kernel.org/stable/c/ee1d7274102285d78a53161fc705a8d8cd40b066"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74574","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74574","identifiers":["CVE-2026-74574"]},"retained":false,"historicalAffected":[]}],"coverage":[]}