{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50136", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.422Z", "datePublished": "2025-06-18T11:03:00.289Z", "dateUpdated": "2026-08-05T08:57:30.552Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:57:30.552Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix duplicated reported IW_CM_EVENT_CONNECT_REPLY event\n\nIf siw_recv_mpa_rr returns -EAGAIN, it means that the MPA reply hasn't\nbeen received completely, and should not report IW_CM_EVENT_CONNECT_REPLY\nin this case. This may trigger a call trace in iw_cm. A simple way to\ntrigger this:\n server: ib_send_lat\n client: ib_send_lat -R \n\nThe call trace looks like this:\n\n kernel BUG at drivers/infiniband/core/iwcm.c:894!\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n <...>\n Workqueue: iw_cm_wq cm_work_handler [iw_cm]\n Call Trace:\n \n cm_work_handler+0x1dd/0x370 [iw_cm]\n process_one_work+0x1e2/0x3b0\n worker_thread+0x49/0x2e0\n ? rescuer_thread+0x370/0x370\n kthread+0xe5/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x1f/0x30\n " } ], "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 triggered while processing an MPA CONNECT reply received over TCP from the remote iWARP peer on the active/client side of Soft-iWARP; a remote responder can deliver a partial then complete MPA reply to reach the vulnerable path.\nAC:L - A peer fully controls TCP segmentation of the MPA reply and can reliably force siw_recv_mpa_rr() to return -EAGAIN then complete; the fix commit also documents a simple, reliable local repro with ib_send_lat.\nPR:N - The attacking peer needs no privileges on the victim host; once a victim SIW client connects to the attacker, the malformed/fragmented MPA reply alone drives the duplicate CONNECT_REPLY upcall.\nUI:N - No additional user action is required beyond the RDMA connection attempt itself; automated or configured SIW clients connecting to a peer are sufficient to expose the path.\nS:U - The impact is a kernel BUG/oops in iw_cm on the same host that runs the SIW client; it does not cross a VM, IOMMU, or other security authority boundary.\nC:N - The failure is a state-machine BUG_ON on a duplicate IW_CM_EVENT_CONNECT_REPLY, not memory corruption or an information leak.\nI:N - There is no write primitive or corruptible object—only an erroneous duplicate CM event that trips an assertion—so integrity is not affected.\nA:H - The duplicate CONNECT_REPLY hits BUG_ON(cm_id_priv->state != IW_CM_STATE_CONN_SENT) in cm_conn_rep_handler, causing a kernel oops/panic and full denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/sw/siw/siw_cm.c" ], "versions": [ { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "11edf0bba15ea9df49478affec7974f351bb2f6e", "status": "affected", "versionType": "git" }, { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "9ade92ddaf2347fb34298c02080caaa3cdd7c27b", "status": "affected", "versionType": "git" }, { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "f6e26e1a5f600b760dc32135d3fac846eabe09e7", "status": "affected", "versionType": "git" }, { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "0066246d2d7e2619f3ecf3cf07333c59e6e7d84d", "status": "affected", "versionType": "git" }, { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "1434de50a5d9dab91c8ce031bc23b3e2178379c5", "status": "affected", "versionType": "git" }, { "version": "6c52fdc244b5ccc468006fd65a504d4ee33743c7", "lessThan": "3056fc6c32e613b760422b94c7617ac9a24a4721", "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/sw/siw/siw_cm.c" ], "versions": [ { "version": "5.3", "status": "affected" }, { "version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.211", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.137", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.61", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.18", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19.2", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0", "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": "5.3", "versionEndExcluding": "5.4.211" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.137" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.18.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.19.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/11edf0bba15ea9df49478affec7974f351bb2f6e" }, { "url": "https://git.kernel.org/stable/c/9ade92ddaf2347fb34298c02080caaa3cdd7c27b" }, { "url": "https://git.kernel.org/stable/c/f6e26e1a5f600b760dc32135d3fac846eabe09e7" }, { "url": "https://git.kernel.org/stable/c/0066246d2d7e2619f3ecf3cf07333c59e6e7d84d" }, { "url": "https://git.kernel.org/stable/c/1434de50a5d9dab91c8ce031bc23b3e2178379c5" }, { "url": "https://git.kernel.org/stable/c/3056fc6c32e613b760422b94c7617ac9a24a4721" } ], "title": "RDMA/siw: Fix duplicated reported IW_CM_EVENT_CONNECT_REPLY event", "x_generator": { "engine": "bippy-1.2.0" } } } }