264 lines
15 KiB
JSON
264 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-46265",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-05-13T15:03:33.108Z",
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"datePublished": "2026-06-03T15:50:05.933Z",
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"dateUpdated": "2026-10-30T12:26:14.155Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:26:14.155Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/infiniband/hw/hns/hns_roce_hw_v2.c"
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],
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"versions": [
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "31b22ca4f5ab8c495fd8bb44c06573f1fb7833a2",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "5fb5028a7a80c2f8fd1e06cea7c4a0af1a58f9ef",
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"status": "affected",
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},
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{
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"lessThan": "12761bd0ae16a80f237c2a65ab1b1064076cc74a",
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"status": "affected",
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"lessThan": "70a5eb757ace5bd627a36f04d871eaf85def424d",
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"status": "affected",
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},
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "562c96b1393da2df3ea62173c84117b39da353b9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "c5ef9a1bcf5b597695d9c2e6ac452e9f89521862",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ffd541d45726341c1830ff595fd7352b6d1cfbcd",
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"lessThan": "c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/infiniband/hw/hns/hns_roce_hw_v2.c"
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],
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"versions": [
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{
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"version": "5.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.7",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.165",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.128",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.75",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.14",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19.4",
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"lessThanOrEqual": "6.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/31b22ca4f5ab8c495fd8bb44c06573f1fb7833a2"
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},
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{
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"url": "https://git.kernel.org/stable/c/5fb5028a7a80c2f8fd1e06cea7c4a0af1a58f9ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/12761bd0ae16a80f237c2a65ab1b1064076cc74a"
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},
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{
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"url": "https://git.kernel.org/stable/c/70a5eb757ace5bd627a36f04d871eaf85def424d"
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},
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{
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"url": "https://git.kernel.org/stable/c/562c96b1393da2df3ea62173c84117b39da353b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27"
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},
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{
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"url": "https://git.kernel.org/stable/c/c5ef9a1bcf5b597695d9c2e6ac452e9f89521862"
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},
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{
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"url": "https://git.kernel.org/stable/c/c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6"
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}
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],
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"title": "RDMA/hns: Fix WQ_MEM_RECLAIM warning",
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} |