{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54219", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.501Z", "datePublished": "2025-12-30T12:11:14.720Z", "dateUpdated": "2026-08-05T09:18:08.934Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:18:08.934Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"IB/isert: Fix incorrect release of isert connection\"\n\nCommit: 699826f4e30a (\"IB/isert: Fix incorrect release of isert connection\") is\ncausing problems on OPA when DEVICE_REMOVAL is happening.\n\n ------------[ cut here ]------------\n WARNING: CPU: 52 PID: 2117247 at drivers/infiniband/core/cq.c:359\nib_cq_pool_cleanup+0xac/0xb0 [ib_core]\n Modules linked in: nfsd nfs_acl target_core_user uio tcm_fc libfc\nscsi_transport_fc tcm_loop target_core_pscsi target_core_iblock target_core_file\nrpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs\nrfkill rpcrdma rdma_ucm ib_srpt sunrpc ib_isert iscsi_target_mod target_core_mod\nopa_vnic ib_iser libiscsi ib_umad scsi_transport_iscsi rdma_cm ib_ipoib iw_cm\nib_cm hfi1(-) rdmavt ib_uverbs intel_rapl_msr intel_rapl_common sb_edac ib_core\nx86_pkg_temp_thermal intel_powerclamp coretemp i2c_i801 mxm_wmi rapl iTCO_wdt\nipmi_si iTCO_vendor_support mei_me ipmi_devintf mei intel_cstate ioatdma\nintel_uncore i2c_smbus joydev pcspkr lpc_ich ipmi_msghandler acpi_power_meter\nacpi_pad xfs libcrc32c sr_mod sd_mod cdrom t10_pi sg crct10dif_pclmul\ncrc32_pclmul crc32c_intel drm_kms_helper drm_shmem_helper ahci libahci\nghash_clmulni_intel igb drm libata dca i2c_algo_bit wmi fuse\n CPU: 52 PID: 2117247 Comm: modprobe Not tainted 6.5.0-rc1+ #1\n Hardware name: Intel Corporation S2600CWR/S2600CW, BIOS\nSE5C610.86B.01.01.0014.121820151719 12/18/2015\n RIP: 0010:ib_cq_pool_cleanup+0xac/0xb0 [ib_core]\n Code: ff 48 8b 43 40 48 8d 7b 40 48 83 e8 40 4c 39 e7 75 b3 49 83\nc4 10 4d 39 fc 75 94 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc <0f> 0b eb a1\n90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f\n RSP: 0018:ffffc10bea13fc80 EFLAGS: 00010206\n RAX: 000000000000010c RBX: ffff9bf5c7e66c00 RCX: 000000008020001d\n RDX: 000000008020001e RSI: fffff175221f9900 RDI: ffff9bf5c7e67640\n RBP: ffff9bf5c7e67600 R08: ffff9bf5c7e64400 R09: 000000008020001d\n R10: 0000000040000000 R11: 0000000000000000 R12: ffff9bee4b1e8a18\n R13: dead000000000122 R14: dead000000000100 R15: ffff9bee4b1e8a38\n FS: 00007ff1e6d38740(0000) GS:ffff9bfd9fb00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00005652044ecc68 CR3: 0000000889b5c005 CR4: 00000000001706e0\n Call Trace:\n \n ? __warn+0x80/0x130\n ? ib_cq_pool_cleanup+0xac/0xb0 [ib_core]\n ? report_bug+0x195/0x1a0\n ? handle_bug+0x3c/0x70\n ? exc_invalid_op+0x14/0x70\n ? asm_exc_invalid_op+0x16/0x20\n ? ib_cq_pool_cleanup+0xac/0xb0 [ib_core]\n disable_device+0x9d/0x160 [ib_core]\n __ib_unregister_device+0x42/0xb0 [ib_core]\n ib_unregister_device+0x22/0x30 [ib_core]\n rvt_unregister_device+0x20/0x90 [rdmavt]\n hfi1_unregister_ib_device+0x16/0xf0 [hfi1]\n remove_one+0x55/0x1a0 [hfi1]\n pci_device_remove+0x36/0xa0\n device_release_driver_internal+0x193/0x200\n driver_detach+0x44/0x90\n bus_remove_driver+0x69/0xf0\n pci_unregister_driver+0x2a/0xb0\n hfi1_mod_cleanup+0xc/0x3c [hfi1]\n __do_sys_delete_module.constprop.0+0x17a/0x2f0\n ? exit_to_user_mode_prepare+0xc4/0xd0\n ? syscall_trace_enter.constprop.0+0x126/0x1a0\n do_syscall_64+0x5c/0x90\n ? syscall_exit_to_user_mode+0x12/0x30\n ? do_syscall_64+0x69/0x90\n ? syscall_exit_work+0x103/0x130\n ? syscall_exit_to_user_mode+0x12/0x30\n ? do_syscall_64+0x69/0x90\n ? exc_page_fault+0x65/0x150\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n RIP: 0033:0x7ff1e643f5ab\n Code: 73 01 c3 48 8b 0d 75 a8 1b 00 f7 d8 64 89 01 48 83 c8 ff c3\n66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0\nff ff 73 01 c3 48 8b 0d 45 a8 1b 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffec9103cc8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0\n RAX: ffffffffffffffda RBX: 00005615267fdc50 RCX: 00007ff1e643f5ab\n RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005615267fdcb8\n RBP: 00005615267fdc50 R08: 0000000000000000 R09: 0000000000000000\n R10: 00007ff1e659eac0 R11: 0000000000000206 R12: 00005615267fdcb8\n R13: 00000000000\n---truncated---" } ], "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 - ib_isert is the in-kernel iSER (iSCSI over RDMA) target; the leak is driven entirely by an RDMA-CM connect/teardown from a remote initiator over RoCEv2 (routable UDP/IP), iWARP (TCP), or soft-RoCE/siw. This is a network-facing storage service equivalent to nvmet-tcp or nfsd.\nAC:L - The missed kref_put is deterministic — every single connection teardown leaks the isert_conn, its QP, its CQ reservation and the PD reference, with no race, timing window, or memory-layout dependency. The attacker just loops connect-then-abort.\nPR:N - isert_accept_np() binds the connection before iSCSI login, and the iSCSI login-failure path iscsi_target_login_sess_out() calls isert_wait_conn()/isert_free_conn() directly, so the leak is triggered entirely pre-authentication. The attacker holds no credentials on the target.\nUI:N - The target's np login thread accepts and tears down incoming iSER connections autonomously; no action by any local user or administrator is needed.\nS:U - The leaked memory, QPs, CQs and PD all belong to the kernel that is running the vulnerable code; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is a reference-count leak — no out-of-bounds read, no stale-pointer dereference, and no uninitialized data is returned on any attacker-reachable path, so no information is disclosed.\nI:N - Nothing is written out of bounds and no control-flow structure is corrupted on the reachable path; the only effect is that objects which should have been destroyed remain allocated.\nA:H - An unauthenticated remote peer can leak an isert_conn plus a full QP, a 264-cqe CQ pool reservation and DMA-mapped buffers on every connection attempt, exhausting kernel memory and finite HCA resources until all RDMA on the host fails. The same defect also produces the reported WARN_ON splat in ib_cq_pool_cleanup and leaves the RDMA_CM_EVENT_DEVICE_REMOVAL handler waiting forever on a ISER_CONN_DOWN transition that can never occur, hanging device removal." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/isert/ib_isert.c" ], "versions": [ { "version": "ccf5a1b28e2b73952e8d23126fa1abc6ff99de55", "lessThan": "77e90bd53019d4d4c9e25552b5efb06dfd8c3c82", "status": "affected", "versionType": "git" }, { "version": "fb4043077b51e577ecccb3233ecfb8764fcea393", "lessThan": "a277b736309f923d9baff0ef166d694d348a5b96", "status": "affected", "versionType": "git" }, { "version": "6718478c18a4f4923d86b81dc7e51363e1a60b03", "lessThan": "9b6296861a5a9d58aacd72c249a68b073c78bfb4", "status": "affected", "versionType": "git" }, { "version": "3c97f2c9ec29ce2f61772f6120aabc852f57132e", "lessThan": "aa950b9835f2d004b071fd220459edd3cd0a3603", "status": "affected", "versionType": "git" }, { "version": "18512de74454fba6ebd06e579f4f1a3200a9e50d", "lessThan": "1bb42aca7a9611c1991a790834e2a65f3345c5e8", "status": "affected", "versionType": "git" }, { "version": "277fbf63b34a377c800d25c7cfd8231ba19cffe2", "lessThan": "3f39698e7e842abc9bd2bd97bf5eeda4543db758", "status": "affected", "versionType": "git" }, { "version": "699826f4e30ab76a62c238c86fbef7e826639c8d", "lessThan": "4082b59705ee9e3912eaa9e15abda8e76039b681", "status": "affected", "versionType": "git" }, { "version": "699826f4e30ab76a62c238c86fbef7e826639c8d", "lessThan": "a3189341e2f609d48f730b18c8bbbf6783233477", "status": "affected", "versionType": "git" }, { "version": "699826f4e30ab76a62c238c86fbef7e826639c8d", "lessThan": "dfe261107c080709459c32695847eec96238852b", "status": "affected", "versionType": "git" }, { "version": "2f884e6df67347301e51e6be5ad4b61cc8989114", "status": "affected", "versionType": "git" }, { "version": "4.14.319", "lessThan": "4.14.326", "status": "affected", "versionType": "semver" }, { "version": "4.19.287", "lessThan": "4.19.295", "status": "affected", "versionType": "semver" }, { "version": "5.4.248", "lessThan": "5.4.257", "status": "affected", "versionType": "semver" }, { "version": "5.10.185", "lessThan": "5.10.195", "status": "affected", "versionType": "semver" }, { "version": "5.15.118", "lessThan": "5.15.132", "status": "affected", "versionType": "semver" }, { "version": "6.1.35", "lessThan": "6.1.53", "status": "affected", "versionType": "semver" }, { "version": "6.3.9", "lessThan": "6.4", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/isert/ib_isert.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.326", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.295", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.257", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.195", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.132", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.53", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.16", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.3", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6", "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": "4.14.319", "versionEndExcluding": "4.14.326" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.287", "versionEndExcluding": "4.19.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.248", "versionEndExcluding": "5.4.257" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.185", "versionEndExcluding": "5.10.195" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.118", "versionEndExcluding": "5.15.132" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.35", "versionEndExcluding": "6.1.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.4.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.5.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/77e90bd53019d4d4c9e25552b5efb06dfd8c3c82" }, { "url": "https://git.kernel.org/stable/c/a277b736309f923d9baff0ef166d694d348a5b96" }, { "url": "https://git.kernel.org/stable/c/9b6296861a5a9d58aacd72c249a68b073c78bfb4" }, { "url": "https://git.kernel.org/stable/c/aa950b9835f2d004b071fd220459edd3cd0a3603" }, { "url": "https://git.kernel.org/stable/c/1bb42aca7a9611c1991a790834e2a65f3345c5e8" }, { "url": "https://git.kernel.org/stable/c/3f39698e7e842abc9bd2bd97bf5eeda4543db758" }, { "url": "https://git.kernel.org/stable/c/4082b59705ee9e3912eaa9e15abda8e76039b681" }, { "url": "https://git.kernel.org/stable/c/a3189341e2f609d48f730b18c8bbbf6783233477" }, { "url": "https://git.kernel.org/stable/c/dfe261107c080709459c32695847eec96238852b" } ], "title": "Revert \"IB/isert: Fix incorrect release of isert connection\"", "x_generator": { "engine": "bippy-1.2.0" } } } }