{"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"}}}}