{"id":"CVE-2026-98367","summary":"RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept\n\nWe need to clear cep before release state_lock as siw_qp_llp_close and\nsiw_qp_modify-\u003esiw_qp_llp_close did.\n\nOtherwise if siw_qp_modify() fails in siw_accept(), the QP's state_lock\nis released before the error path cleanup. A concurrent ibv_modify_qp()\ntransitioning the QP to ERROR can race in this window:\n\n  siw_accept()                       ibv_modify_qp(ERROR)\n  ----------------------             ----------------------\n  siw_qp_modify() fails\n  up_write(&qp-\u003estate_lock)\n                                     down_write(&qp-\u003estate_lock)\n                                     nextstate_from_idle():\n\t\t\t\t     if (qp-\u003ecep)\n                                       siw_cep_put(qp-\u003ecep) \u003c- frees cep\n                                       qp-\u003ecep = NULL\n  goto error\n    cep-\u003eqp = NULL                   \u003c- UAF\n\nClear qp-\u003ecep and drop the association reference taken by siw_cep_get(),\nall under the write lock held from the initial down_write(&qp-\u003estate_lock).\nThread B therefore sees qp-\u003ecep == NULL, skips its own put, and cannot free\nthe cep before siw_accept() is done with it.","modified":"2026-10-08T02:52:58.472686370Z","published":"2026-10-06T08:46:52.452Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98367.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/030306bbb9273af80f14d7af20129661964cd9a7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/32cd87f54dd1070020e664ccb0312a9f0fea79b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9dcc0f4e488b70cff81e0e5717a498c929cf5de3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad50d19f3d1ce052b3a146143581e930a1efb33e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bfdc744bf20ae4c3ef2e470298de5237c5c9a13c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df2584750314336edcbcc21fb388e04b260f35b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3f039082856adab7e195dea1af45d93dd6a3f1c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98367.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98367"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6c52fdc244b5ccc468006fd65a504d4ee33743c7"},{"fixed":"f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078"},{"fixed":"e3f039082856adab7e195dea1af45d93dd6a3f1c"},{"fixed":"ad50d19f3d1ce052b3a146143581e930a1efb33e"},{"fixed":"030306bbb9273af80f14d7af20129661964cd9a7"},{"fixed":"df2584750314336edcbcc21fb388e04b260f35b7"},{"fixed":"9dcc0f4e488b70cff81e0e5717a498c929cf5de3"},{"fixed":"bfdc744bf20ae4c3ef2e470298de5237c5c9a13c"},{"fixed":"32cd87f54dd1070020e664ccb0312a9f0fea79b4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98367.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98367.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}