{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54168", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.495Z", "datePublished": "2025-12-30T12:08:43.394Z", "dateUpdated": "2026-08-05T09:17:49.049Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:17:49.049Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx4: Prevent shift wrapping in set_user_sq_size()\n\nThe ucmd->log_sq_bb_count variable is controlled by the user so this\nshift can wrap. Fix it by using check_shl_overflow() in the same way\nthat it was done in commit 515f60004ed9 (\"RDMA/hns: Prevent undefined\nbehavior in hns_roce_set_user_sq_size()\")." } ], "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 attacker-controlled value arrives in the `mlx4_ib_create_qp` udata payload written to `/dev/infiniband/uverbsN`, a local character-device verb call. No remote peer or network packet participates in reaching `set_user_sq_size()`.\nAC:L - Triggering is fully deterministic — the attacker simply sets `log_sq_bb_count` to 31 (or 63/95/…/255) in the create-QP command; no race, timing window, or memory-layout condition is involved, and the resulting QP context is programmed on every attempt.\nPR:L - No `capable()` or capability gate exists anywhere along `ib_uverbs_open` → `ib_uverbs_create_qp` → `create_qp_common`; access is controlled purely by the uverbs device node, which rdma-core's udev rules ship as mode 0666, so any unprivileged local account (including inside a container, since RDMA devices default to shared net-ns mode) can issue the malformed create-QP.\nUI:N - The whole sequence — create QP with the wrapped shift, then modify to INIT/RTR/RTS and ring the send doorbell — is driven entirely by the attacker's own process. No victim action is needed.\nS:U - The bypassed sanity check, the corrupted `mlx4_ib_qp` state, and the resulting device errors all remain under the host kernel's security authority; no hypervisor, IOMMU, or sandbox boundary is crossed by the defect itself.\nC:H - The bypass programs the QP context with a 2 MB send queue against an MTT allocation as small as one page, so the adapter translates send-WQE fetches through MTT entries belonging to other RDMA objects — including other processes' pinned registrations — yielding a large, unbounded out-of-bounds read at the DMA layer rather than a few stray bytes.\nI:H - The same out-of-range translation window lets the device act on work-queue entries fetched from memory outside the registered buffer, and `qp->sq.wqe_cnt` becoming `INT_MIN` corrupts the QP context (spuriously setting the `sq_no_prefetch` bit and a maximal `log_sq_size`), giving attacker-induced modification of kernel and device state well beyond the QP's own resources.\nA:H - This re-exposes exactly the crash that commit 839041329fd3 added the check to prevent (\"arbitrarily large/small values … can crash the kernel\"); accesses beyond the mapped MTT produce local-access/QP-operation errors and can escalate to a catastrophic adapter error and `mlx4_catas_error()` reset, killing InfiniBand and Ethernet for every user of the ConnectX-3 NIC, and the shift itself panics a `CONFIG_UBSAN_SHIFT` + `panic_on_warn` kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/hw/mlx4/qp.c" ], "versions": [ { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "3d5ae269c4bd392ec1edbfb3bd031b8f42d7feff", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "8feca625900777e02a449e53fe4121339934c38a", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "9ad3221c86cc9c6305594b742d4a72dfbd4ea579", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "9911be2155720221a4f1f722b22bd0e2388d8bcf", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "3ce0df3493277b9df275cb8455d9c677ae701230", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "196a6df08b08699ace4ce70e1efcdd9081b6565f", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "a183905869e692b6b7805b7472235585eff8e429", "status": "affected", "versionType": "git" }, { "version": "839041329fd3410e07d614f81e75bb43367d8f89", "lessThan": "d50b3c73f1ac20dabc53dc6e9d64ce9c79a331eb", "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/mlx4/qp.c" ], "versions": [ { "version": "2.6.24", "status": "affected" }, { "version": "0", "lessThan": "2.6.24", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.283", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.243", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.180", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "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": "2.6.24", "versionEndExcluding": "4.19.283" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "5.4.243" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "5.10.180" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "5.15.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "6.1.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "6.2.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "6.3.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.24", "versionEndExcluding": "6.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3d5ae269c4bd392ec1edbfb3bd031b8f42d7feff" }, { "url": "https://git.kernel.org/stable/c/8feca625900777e02a449e53fe4121339934c38a" }, { "url": "https://git.kernel.org/stable/c/9ad3221c86cc9c6305594b742d4a72dfbd4ea579" }, { "url": "https://git.kernel.org/stable/c/9911be2155720221a4f1f722b22bd0e2388d8bcf" }, { "url": "https://git.kernel.org/stable/c/3ce0df3493277b9df275cb8455d9c677ae701230" }, { "url": "https://git.kernel.org/stable/c/196a6df08b08699ace4ce70e1efcdd9081b6565f" }, { "url": "https://git.kernel.org/stable/c/a183905869e692b6b7805b7472235585eff8e429" }, { "url": "https://git.kernel.org/stable/c/d50b3c73f1ac20dabc53dc6e9d64ce9c79a331eb" } ], "title": "RDMA/mlx4: Prevent shift wrapping in set_user_sq_size()", "x_generator": { "engine": "bippy-1.2.0" } } } }