{"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 <server_ip>\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  <TASK>\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  </TASK>"}],"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"}}}}