{"id":"CVE-2026-98352","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted\n\nThe client borrows shared CQ credits in the ADDR_RESOLVED handler via\nib_cq_pool_get(), before the peer is …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted\n\nThe client borrows shared CQ credits in the ADDR_RESOLVED handler via\nib_cq_pool_get(), before the peer is …","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < a82cca40139d9fcae8208901856bd5bb4051f097","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < 74c4ed55e61f1b65ddbebc5b635d136461a1c3da","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < 6f8020fe7465f49e234a576c04e415e9d08c7878","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < 31024e158b45358370a0a14ed96589e6aa62d6cb","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < 8f253d5893f991742464b9e7203c43fc08d0aa11","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < bf88ac4867050112a6c819c8d1a7209bf48ef427","Linux >= 3b89e92c2a95a39c38a3808f4528e502a39bd94d < 2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda","Linux 5.13"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:28.587","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98352","references":[{"url":"https://git.kernel.org/stable/c/2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/31024e158b45358370a0a14ed96589e6aa62d6cb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6f8020fe7465f49e234a576c04e415e9d08c7878","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/74c4ed55e61f1b65ddbebc5b635d136461a1c3da","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8f253d5893f991742464b9e7203c43fc08d0aa11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a82cca40139d9fcae8208901856bd5bb4051f097","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf88ac4867050112a6c819c8d1a7209bf48ef427","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98352.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98352"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546432"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98352"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98352"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98352.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.396Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"epss":0.00161,"epssPercentile":0.05222,"slug":"CVE-2026-98352","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted\n\nThe client borrows shared CQ credits in the ADDR_RESOLVED handler via\nib_cq_pool_get(), before the peer is connected. create_cm() can return\n-ERESTARTSYS from wait_event_interruptible_timeout() without destroying\nthe CM ID. The init_conns() and stop-and-destroy paths then call\ndestroy_con_cq_qp() while cq is still NULL (no PUT) and only afterwards\nrdma_destroy_id().\n\nCMA serializes the handler against rdma_destroy_id() with handler_mutex,\nbut that does not order the GET against destroy_con_cq_qp(). If\nADDR_RESOLVED has already passed the DESTROYING check, it can take\ncon_mutex, GET credits, and then lose the con to kfree. Device\nunregister later hits WARN_ON(cq->cqe_used) in ib_cq_pool_cleanup().\n\nSet a per-connection flag under con_mutex before CQ/QP teardown so a\nracing ADDR_RESOLVED cannot borrow credits after teardown has begun.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-10 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98352.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219123,"id":"CVE-2026-98352","ts":1791707067515,"field":"cvss","old":null,"new":"5.5"},{"seq":219122,"id":"CVE-2026-98352","ts":1791707067515,"field":"severity","old":"none","new":"medium"}]}