{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46265", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.108Z", "datePublished": "2026-06-03T15:50:05.933Z", "dateUpdated": "2026-08-05T12:30:52.435Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:30:52.435Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix WQ_MEM_RECLAIM warning\n\nWhen sunrpc is used, if a reset triggered, our wq may lead the\nfollowing trace:\n\nworkqueue: WQ_MEM_RECLAIM xprtiod:xprt_rdma_connect_worker [rpcrdma]\nis flushing !WQ_MEM_RECLAIM hns_roce_irq_workq:flush_work_handle\n[hns_roce_hw_v2]\nWARNING: CPU: 0 PID: 8250 at kernel/workqueue.c:2644 check_flush_dependency+0xe0/0x144\nCall trace:\n check_flush_dependency+0xe0/0x144\n start_flush_work.constprop.0+0x1d0/0x2f0\n __flush_work.isra.0+0x40/0xb0\n flush_work+0x14/0x30\n hns_roce_v2_destroy_qp+0xac/0x1e0 [hns_roce_hw_v2]\n ib_destroy_qp_user+0x9c/0x2b4\n rdma_destroy_qp+0x34/0xb0\n rpcrdma_ep_destroy+0x28/0xcc [rpcrdma]\n rpcrdma_ep_put+0x74/0xb4 [rpcrdma]\n rpcrdma_xprt_disconnect+0x1d8/0x260 [rpcrdma]\n xprt_rdma_connect_worker+0xc0/0x120 [rpcrdma]\n process_one_work+0x1cc/0x4d0\n worker_thread+0x154/0x414\n kthread+0x104/0x144\n ret_from_fork+0x10/0x18\n\nSince QP destruction frees memory, this wq should have the WQ_MEM_RECLAIM." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The bug is reached when an RPC-over-RDMA path tears down a HiSilicon HNS queue pair; remote NFS/RDMA peers can force disconnect/reconnect and QP destruction on internet- or fabric-facing storage nodes (svc_rdma / rpcrdma), which is network-driven rather than purely local ioctl access.\nAC:L - Once NFS-over-RDMA and HNS RoCE are enabled, a remote peer can repeatedly trigger disconnect and failed reconnect work; combined with routine memory-reclaim pressure (PF_MEMALLOC on the NFS swap path) or NIC reset, the WARN/deadlock path is attacker-influenceable without rare one-off victim state.\nPR:N - On an NFS-over-RDMA server the vulnerable ib_destroy_qp/flush_work path runs while handling RDMA CM disconnects from network clients, before any per-file NFS authorization; no local UNIX privileges on the victim are required beyond the service already being exposed.\nUI:N - Exploitation requires only network traffic and kernel-side RPC/RDMA handling; no end-user actions such as mounting a filesystem or clicking a link are needed on the victim.\nS:U - Impact is confined to kernel workqueue forward-progress and availability on the host running the HNS driver; it does not cross VM, container, or IOMMU security boundaries.\nC:N - The flaw is a missing WQ_MEM_RECLAIM flag leading to check_flush_dependency WARN_ONCE and possible reclaim deadlock; there is no memory corruption, out-of-bounds access, or use-after-free that could yield information disclosure.\nI:N - No attacker-controlled writes, type confusion, or code-execution primitive exist; the failure mode is a workqueue dependency violation during QP flush/destroy, not integrity compromise of data or code.\nA:H - Violating the workqueue forward-progress rule can deadlock memory reclaim, and the observed WARN_ONCE becomes a kernel panic when panic_on_warn is enabled; even without panic, a stuck reclaim path is a full host availability failure." } ] } ], "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": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "12761bd0ae16a80f237c2a65ab1b1064076cc74a", "status": "affected", "versionType": "git" }, { "version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "70a5eb757ace5bd627a36f04d871eaf85def424d", "status": "affected", "versionType": "git" }, { "version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "562c96b1393da2df3ea62173c84117b39da353b9", "status": "affected", "versionType": "git" }, { "version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27", "status": "affected", "versionType": "git" }, { "version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "c5ef9a1bcf5b597695d9c2e6ac452e9f89521862", "status": "affected", "versionType": "git" }, { "version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd", "lessThan": "c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6", "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": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "5.7", "versionEndExcluding": "6.1.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.128" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.75" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.19.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/12761bd0ae16a80f237c2a65ab1b1064076cc74a" }, { "url": "https://git.kernel.org/stable/c/70a5eb757ace5bd627a36f04d871eaf85def424d" }, { "url": "https://git.kernel.org/stable/c/562c96b1393da2df3ea62173c84117b39da353b9" }, { "url": "https://git.kernel.org/stable/c/0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27" }, { "url": "https://git.kernel.org/stable/c/c5ef9a1bcf5b597695d9c2e6ac452e9f89521862" }, { "url": "https://git.kernel.org/stable/c/c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6" } ], "title": "RDMA/hns: Fix WQ_MEM_RECLAIM warning", "x_generator": { "engine": "bippy-1.2.0" } } } }