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CVE-2026-98352— RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已解决以下漏洞： RDMA/rtrs-clt：修复连接中断时 CQ 池泄漏问题 客户端在 处理程序中调用 借用共享 CQ 积分（credits），此时对端（peer）尚未连接。 可能从 返回 ，且未销毁 CM ID。随后， 和停止销毁路径会调用 ，而此时 CQ 仍为 NULL（未执行 PUT），之后才执行 。 CMA 通过 将处理程序与 进行序列化，但这并未保证 GET 操作与 之间的顺序。如果 已越过 DESTROYING 状态检查，它可能获取 、借用积分（credits），随后因连接被释

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 3b89e92c2a95a39c38a3808f4528e502a39bd94d< a82cca40139d9fcae8208901856bd5bb4051f097 affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< 74c4ed55e61f1b65ddbebc5b635d136461a1c3da affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< 6f8020fe7465f49e234a576c04e415e9d08c7878 affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< 31024e158b45358370a0a14ed96589e6aa62d6cb affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< 8f253d5893f991742464b9e7203c43fc08d0aa11 affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< bf88ac4867050112a6c819c8d1a7209bf48ef427 affected
3b89e92c2a95a39c38a3808f4528e502a39bd94d< 2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda affected
5.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-98352

Vulnerability Information
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Vulnerability Title
RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted The client borrows shared CQ credits in the ADDR_RESOLVED handler via ib_cq_pool_get(), before the peer is connected. create_cm() can return -ERESTARTSYS from wait_event_interruptible_timeout() without destroying the CM ID. The init_conns() and stop-and-destroy paths then call destroy_con_cq_qp() while cq is still NULL (no PUT) and only afterwards rdma_destroy_id(). CMA serializes the handler against rdma_destroy_id() with handler_mutex, but that does not order the GET against destroy_con_cq_qp(). If ADDR_RESOLVED has already passed the DESTROYING check, it can take con_mutex, GET credits, and then lose the con to kfree. Device unregister later hits WARN_ON(cq->cqe_used) in ib_cq_pool_cleanup(). Set a per-connection flag under con_mutex before CQ/QP teardown so a racing ADDR_RESOLVED cannot borrow credits after teardown has begun.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 3b89e92c2a95a39c38a3808f4528e502a39bd94d ~ a82cca40139d9fcae8208901856bd5bb4051f097 -
Linux Linux 5.13 -

II. Public POCs for CVE-2026-98352

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III. Intelligence Information for CVE-2026-98352

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Patches & Fixes for CVE-2026-98352 (7)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98281 7.8 HIGH futex: Also allocate private hash on vfork()
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98352

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