{"id":"CVE-2026-98257","title":"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->c_cm_lock held","summary":"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->c_cm_lock held.  When the peer ne…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < 424019be3f637da76b74f44a40034669acbb166f","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < 14fb90067d13f4494cff0f03243fae3cf2911cbc","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < 344c72a0bc2703a6de4918ed935850e07dae3af2","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < b5c9f2951d330d4a198a64d6e60f79b4bd6ef078","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < d392b16acd0908f077289aad8bba066ff16de336","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < 65ca0a5037152a5a80b8fe6aac80eb80458be573","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < 7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8","Linux >= f147dd9ecabf23fd63d2562ffe64252a0453ecde < f97d8c7bab7843631206a114986c9059da03efeb","Linux 2.6.37"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:14.540","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98257","references":[{"url":"https://git.kernel.org/stable/c/14fb90067d13f4494cff0f03243fae3cf2911cbc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/344c72a0bc2703a6de4918ed935850e07dae3af2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/424019be3f637da76b74f44a40034669acbb166f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/65ca0a5037152a5a80b8fe6aac80eb80458be573","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b5c9f2951d330d4a198a64d6e60f79b4bd6ef078","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d392b16acd0908f077289aad8bba066ff16de336","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f97d8c7bab7843631206a114986c9059da03efeb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.428Z","slug":"CVE-2026-98257","body":"## Overview\n\nIn 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->c_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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}