{"apiVersion":"1.0","identifier":"CVE-2026-74574","description":"In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open() The failed_dev_add and failed_dev_name paths drop the file-device reference while wq->wq_lock is still held. If put_device(fdev) drops the last reference, idxd_file_dev_release() runs synchronously and tries to take wq->wq_lock again, deadlocking. Those paths also fall through into the later ctx cleanup labels even though idxd_file_dev_release() owns that cleanup and frees ctx. This can make idxd_xa_pasid_remove(ctx) and kfree(ctx) operate on a freed context. Move idxd_wq_get() before file-device setup can fail, since the release callback always calls idxd_wq_put(). Then unlock wq->wq_lock before put_device(fdev) and return directly from the file-device setup failure path, leaving ctx cleanup to the release callback.","publishedAt":"2026-08-15T13:18:03","lastModifiedAt":"2026-08-17T06:19:55","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74574","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00122,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74574","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74574","en":"https://www.redsauce.net/en/cves/CVE-2026-74574","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74574","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74574","de":"https://www.redsauce.net/de/cves/CVE-2026-74574","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74574","el":"https://www.redsauce.net/el/cves/CVE-2026-74574"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74574"}}