{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-47750", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-30T16:00:12.961Z", "datePublished": "2024-10-21T12:14:15.786Z", "dateUpdated": "2026-08-05T11:39:58.173Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:39:58.173Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix Use-After-Free of rsv_qp on HIP08\n\nCurrently rsv_qp is freed before ib_unregister_device() is called\non HIP08. During the time interval, users can still dereg MR and\nrsv_qp will be used in this process, leading to a UAF. Move the\nrelease of rsv_qp after calling ib_unregister_device() to fix it." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is reached by a local process issuing an MR deregistration on an RDMA verbs character device (/dev/infiniband/uverbs*, typically mode 0666 under stock rdma-core udev rules), i.e. via ioctl/write on a local device file. No remote packet processing reaches `free_mr_send_cmd_to_hw()`.\nAC:L - The attacker owns the consuming side of the race and can keep many threads permanently spinning in `ib_dereg_mr()`, so threads are continuously resident in the completely unsynchronized window between the `hr_dev->state` TOCTOU check and the dereference of `free_mr->rsv_qp[]`/`rsv_cq`; whenever the routine teardown or hardware reset path runs `free_mr_exit()`, the race is won reliably, and the freed `struct hns_roce_qp` is a plain kmalloc object the attacker can spray.\nPR:L - Only an ordinary unprivileged local account is needed — opening the uverbs device, allocating a PD and registering a small MR (within the default RLIMIT_MEMLOCK, so no CAP_IPC_LOCK), then deregistering it, is enough to enter `hns_roce_v2_dereg_mr()`. No root, CAP_NET_ADMIN, or capability in any namespace is required.\nUI:N - The attacker's own dereg-MR loop drives the vulnerable path entirely on its own; no victim action, file open, or mount is needed, and the teardown side is a routine system event rather than a user-performed step.\nS:U - The use-after-free corrupts kernel heap state within the same kernel security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free on a heap-allocated `struct hns_roce_qp` and `struct hns_roce_cq`; after slab reallocation, `hns_roce_v2_post_send()` and `hns_roce_v2_poll_cq()` read pointers, MTR translation state, and CQE contents out of attacker-groomed memory, yielding an arbitrary kernel-memory read primitive.\nI:H - `hns_roce_v2_post_send()` writes a WQE and `qp->sq.wrid[wqe_idx]` through addresses computed from the freed object's fields and takes a spinlock on freed memory, so reclaiming the slab gives a controlled kernel write usable for control-flow hijack and privilege escalation; `mutex_lock()` on a `mutex_destroy()`ed lock compounds the corruption.\nA:H - Even without successful heap grooming, dereferencing the freed reserved QP/CQ and locking a destroyed mutex reliably produces a KASAN splat, list corruption, or kernel oops/panic, taking the RDMA-serving host down." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/hns/hns_roce_hw_v2.c" ], "versions": [ { "version": "70f92521584f1d1e8268311ee84413307b0fdea8", "lessThan": "2ccf1c75d39949d8ea043d04a2e92d7100ea723d", "status": "affected", "versionType": "git" }, { "version": "70f92521584f1d1e8268311ee84413307b0fdea8", "lessThan": "d2d9c5127122745da6e887f451dd248cfeffca33", "status": "affected", "versionType": "git" }, { "version": "70f92521584f1d1e8268311ee84413307b0fdea8", "lessThan": "dac2723d8bfa9cf5333f477741e6e5fa1ed34645", "status": "affected", "versionType": "git" }, { "version": "70f92521584f1d1e8268311ee84413307b0fdea8", "lessThan": "60595923371c2ebe7faf82536c47eb0c967e3425", "status": "affected", "versionType": "git" }, { "version": "70f92521584f1d1e8268311ee84413307b0fdea8", "lessThan": "fd8489294dd2beefb70f12ec4f6132aeec61a4d0", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/hns/hns_roce_hw_v2.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.113", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.54", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.13", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.2", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.1.113" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.10.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.11.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/2ccf1c75d39949d8ea043d04a2e92d7100ea723d" }, { "url": "https://git.kernel.org/stable/c/d2d9c5127122745da6e887f451dd248cfeffca33" }, { "url": "https://git.kernel.org/stable/c/dac2723d8bfa9cf5333f477741e6e5fa1ed34645" }, { "url": "https://git.kernel.org/stable/c/60595923371c2ebe7faf82536c47eb0c967e3425" }, { "url": "https://git.kernel.org/stable/c/fd8489294dd2beefb70f12ec4f6132aeec61a4d0" } ], "title": "RDMA/hns: Fix Use-After-Free of rsv_qp on HIP08", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-47750", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-21T12:58:02.690049Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T13:04:13.178Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:21:45.725Z" } } ] } }