{"id":"CVE-2026-98257","summary":"rds: ib: use rds_conn_drop() on protocol version mismatch","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrds: ib: use rds_conn_drop() on protocol version mismatch\n\nrds_ib_cm_connect_complete() runs from the RDMA-CM event handler with\nconn-\u003ec_cm_lock held.  When the peer negotiates a protocol version\nolder than RDS_PROTOCOL_COMPAT_VERSION, the handler calls\nrds_conn_destroy(), which is only safe in the rmmod path: it\nsynchronously tears the connection down and flush_work()es the\nshutdown work cp_down_w.\n\nThat shutdown work (rds_conn_shutdown()) needs cp_cm_lock, which is\nthe very lock the event handler still holds, so the flush never\ncompletes: the two workers wait on each other and the RDS connection\nworkqueues stall for good.\n\nAll other RDMA-CM failure paths (REJECTED, CONNECT_ERROR,\nDISCONNECTED) use rds_conn_drop(), which marks the connection\nRDS_CONN_ERROR and schedules the shutdown work asynchronously.  Use\nit here as well.","modified":"2026-10-07T02:47:30.178079803Z","published":"2026-10-06T08:45:22.722Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98257.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/14fb90067d13f4494cff0f03243fae3cf2911cbc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/344c72a0bc2703a6de4918ed935850e07dae3af2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/424019be3f637da76b74f44a40034669acbb166f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65ca0a5037152a5a80b8fe6aac80eb80458be573"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5c9f2951d330d4a198a64d6e60f79b4bd6ef078"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d392b16acd0908f077289aad8bba066ff16de336"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f97d8c7bab7843631206a114986c9059da03efeb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98257.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98257"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f147dd9ecabf23fd63d2562ffe64252a0453ecde"},{"fixed":"424019be3f637da76b74f44a40034669acbb166f"},{"fixed":"14fb90067d13f4494cff0f03243fae3cf2911cbc"},{"fixed":"344c72a0bc2703a6de4918ed935850e07dae3af2"},{"fixed":"b5c9f2951d330d4a198a64d6e60f79b4bd6ef078"},{"fixed":"d392b16acd0908f077289aad8bba066ff16de336"},{"fixed":"65ca0a5037152a5a80b8fe6aac80eb80458be573"},{"fixed":"7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8"},{"fixed":"f97d8c7bab7843631206a114986c9059da03efeb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98257.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.37"},{"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-2026-98257.json"}}],"schema_version":"1.9.0"}