CVE-2026-93151
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: fix response resource leak on queue teardown When an nvme target with rdma transport is removed while I/Os are in flight, a response can be posted but its send completion is never delivered before the connection is torn down. As a result nvmet_rdma_send_done() and nvmet_rdma_release_rsp() are never called for the response, and this leaks the allocated RDMA read/write context and request SGLs. These leaks are recreated by running blktests nvme/061 with the rdma transport and the siw driver. Kernel kmemleak feature reports them as follows: unreferenced object 0xffff88812bc490c0 (size 32): comm "kworker/2:1H", pid 409, jiffies 4307744490 backtrace (crc 89afd339): __kmalloc_noprof+0x5f9/0x890 sgl_alloc_order+0x7b/0x380 nvmet_req_alloc_sgls+0x290/0x4f0 [nvmet] nvmet_rdma_map_sgl_keyed+0x241/0x12e0 [nvmet_rdma] nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma] __ib_process_cq+0x149/0x4c0 [ib_core] ib_cq_poll_work+0x49/0x160 [ib_core] process_one_work+0x8b2/0x1640 worker_thread+0x5fd/0xfe0 kthread+0x367/0x460 ret_from_fork+0x655/0x9d0 ret_from_fork_asm+0x1a/0x30 unreferenced object 0xffff88814bd05e80 (size 64): comm "kworker/3:1H", pid 148, jiffies 4295195428 backtrace (crc e35510cb): __kmalloc_noprof+0x5f9/0x890 rdma_rw_ctx_init+0x333/0x1fa0 [ib_core] nvmet_rdma_map_sgl_keyed+0x5c8/0x12e0 [nvmet_rdma] nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma] __ib_process_cq+0x149/0x4c0 [ib_core] ib_cq_poll_work+0x49/0x160 [ib_core] process_one_work+0x8b2/0x1640 worker_thread+0x5fd/0xfe0 kthread+0x367/0x460 ret_from_fork+0x655/0x9d0 ret_from_fork_asm+0x1a/0x30 To avoid the memory leaks, reclaim the memory of the in-flight responses when the queue QP is torn down. Call nvmet_rdma_free_rsp_resources() that frees up the RDMA read/write context and the request SGLs of such responses.
View original CVE JSON
{
"id": "CVE-2026-93151",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-09-17T17:18:10.337",
"lastModified": "2026-10-19T10:17:05.283",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-rdma: fix response resource leak on queue teardown\n\nWhen an nvme target with rdma transport is removed while I/Os are in\nflight, a response can be posted but its send completion is never\ndelivered before the connection is torn down. As a result\nnvmet_rdma_send_done() and nvmet_rdma_release_rsp() are never called for\nthe response, and this leaks the allocated RDMA read/write context and\nrequest SGLs.\n\nThese leaks are recreated by running blktests nvme/061 with the rdma\ntransport and the siw driver. Kernel kmemleak feature reports them as\nfollows:\n\n unreferenced object 0xffff88812bc490c0 (size 32):\n comm \"kworker/2:1H\", pid 409, jiffies 4307744490\n backtrace (crc 89afd339):\n __kmalloc_noprof+0x5f9/0x890\n sgl_alloc_order+0x7b/0x380\n nvmet_req_alloc_sgls+0x290/0x4f0 [nvmet]\n nvmet_rdma_map_sgl_keyed+0x241/0x12e0 [nvmet_rdma]\n nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\n __ib_process_cq+0x149/0x4c0 [ib_core]\n ib_cq_poll_work+0x49/0x160 [ib_core]\n process_one_work+0x8b2/0x1640\n worker_thread+0x5fd/0xfe0\n kthread+0x367/0x460\n ret_from_fork+0x655/0x9d0\n ret_from_fork_asm+0x1a/0x30\n\n unreferenced object 0xffff88814bd05e80 (size 64):\n comm \"kworker/3:1H\", pid 148, jiffies 4295195428\n backtrace (crc e35510cb):\n __kmalloc_noprof+0x5f9/0x890\n rdma_rw_ctx_init+0x333/0x1fa0 [ib_core]\n nvmet_rdma_map_sgl_keyed+0x5c8/0x12e0 [nvmet_rdma]\n nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\n __ib_process_cq+0x149/0x4c0 [ib_core]\n ib_cq_poll_work+0x49/0x160 [ib_core]\n process_one_work+0x8b2/0x1640\n worker_thread+0x5fd/0xfe0\n kthread+0x367/0x460\n ret_from_fork+0x655/0x9d0\n ret_from_fork_asm+0x1a/0x30\n\nTo avoid the memory leaks, reclaim the memory of the in-flight responses\nwhen the queue QP is torn down. Call nvmet_rdma_free_rsp_resources()\nthat frees up the RDMA read/write context and the request SGLs of such\nresponses."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/nvme/target/rdma.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "8f000cac6e7a6edca7ab93bafc7ed28b27c1545b",
"lessThan": "91cfa74f1f3772e8c3662c064a45d8633e00c78e",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "9584b3c30e4ee8ca315bdc12249cc6c47cf1a482",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08",
"versionType": "git",
"status": "affected"
},
{
"version": "8f000cac6e7a6edca7ab93bafc7ed28b27c1545b",
"lessThan": "ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c",
"versionType": "git",
"status": "affected"
},
{
"version": "8f000cac6e7a6edca7ab93bafc7ed28b27c1545b",
"lessThan": "d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50",
"versionType": "git",
"status": "affected"
},
{
"version": "8f000cac6e7a6edca7ab93bafc7ed28b27c1545b",
"lessThan": "0114dd303b373522dea06053aabae34bdd33a7c4",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/nvme/target/rdma.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.8",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.221",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.188",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.157",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.110",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.52",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.6",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"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",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/0114dd303b373522dea06053aabae34bdd33a7c4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/91cfa74f1f3772e8c3662c064a45d8633e00c78e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/9584b3c30e4ee8ca315bdc12249cc6c47cf1a482",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}