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CVE-2026-90292— RDMA/siw: Fix use-after-free in siw_accept()

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，以下漏洞已得到修复： RDMA/siw：修复 siw_accept() 中的释放后使用（use-after-free）问题 函数会查找由用户空间提供的 QP（队列对）。如果该 QP 已处于 RTS（Ready To Send，准备发送）状态，函数会在将传入的 CEP（连接端点）与之关联之前跳转到错误清理路径。 清理过程检查 是否非空，并假设是当前调用建立了该关联。然而， 可能指向一个已有连接的 CEP。此时清理逻辑会错误地释放传入 CEP 的引用，而不是 的引用。当传入端点失去其剩余的所有引

CVSS 7.8 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6c52fdc244b5ccc468006fd65a504d4ee33743c7< d57db36e74cca4763e1c2c0c6eb9f84d19813879 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< 59de5502f32895ffe9c45530327ed997b90fdf06 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< a89d120615e711ce8fce551fd291c2f387666735 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< b9e7d3d9fdb2bfcfb25d93529fdf766536b37c78 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< 8f286a8094ee32c415f9ecd2c20765beb8a18c79 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< de603f01d9ccf823e575b013ffd86ebedca9a8c5 affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< 561651d6a15588cee2040755f253faca2463415c affected
6c52fdc244b5ccc468006fd65a504d4ee33743c7< a9394971825933074032794a5feee5211509c774 affected
… +10 more rows
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I. Basic Information for CVE-2026-90292

Vulnerability Information
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Vulnerability Title
RDMA/siw: Fix use-after-free in siw_accept()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix use-after-free in siw_accept() siw_accept() looks up the QP supplied by userspace. If that QP is already in RTS, the function jumps to error cleanup before associating the incoming CEP with it. The cleanup tests whether qp->cep is non-NULL and assumes the current call installed the association. However, qp->cep can point to the CEP of an existing connection. The cleanup then drops a reference from the incoming cep, not qp->cep. Once the incoming endpoint loses its remaining references, this can free it before the subsequent cep->qp store, causing a use-after-free. It also clears the existing QP association. Only release the association reference when qp->cep is the incoming CEP. This preserves an existing association and avoids accessing the freed endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 6c52fdc244b5ccc468006fd65a504d4ee33743c7 ~ d57db36e74cca4763e1c2c0c6eb9f84d19813879 -
Linux Linux 5.3 -

II. Public POCs for CVE-2026-90292

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III. Intelligence Information for CVE-2026-90292

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Patches & Fixes for CVE-2026-90292 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90292

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