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the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Validate the passed in fops for ib_get_ucaps()\n\nSashiko pointed out it is not safe to rely only on the devt because\nchar/block alias so if the user finds a block device with the same dev_t\nit can masquerade as a ucap cdev fd.\n\nTest the f_ops to only accept authentic cdevs."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-28T06:40:04.206Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d"},{"url":"https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b"},{"url":"https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee"}],"title":"RDMA/core: Validate the passed in fops for 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finds a block device with the same dev_t\nit can masquerade as a ucap cdev fd.\n\nTest the f_ops to only accept authentic cdevs.","Type":"Description","Title":"RDMA/core: Validate the passed in fops for ib_get_ucaps()"}]}}}