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CVE-2026-92514— RDMA/erdma: Fix CEQ tasklet use-after-free on removal

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，已修复以下漏洞： RDMA/erdma：修复移除时 CEQ 任务函数（tasklet）中的释放后使用（use-after-free）问题 每个 CEQ 中断处理程序仅调度 。该 tasklet 会调用 ，该函数通过 读取 DMA 一致性（DMA-coherent）的 EQ 环形缓冲区，并通过 更新 。 先释放每个 CEQ 的中断请求（IRQ），然后销毁其 EQ。 会阻止新的硬中断并等待正在执行中的中断处理程序完成，但它不会等待/清空已被该处理程序调度的 tasklet。因此，该 taskle

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1601 · Modify System Image

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux f2a0a630b953451a59a2612ad8c29246638f0a38< 0e8b78dabb1f156db05ffe74c6eae861167c7c21 affected
f2a0a630b953451a59a2612ad8c29246638f0a38< 6e129c1310abfa786a510cc63e69c5ef12349048 affected
f2a0a630b953451a59a2612ad8c29246638f0a38< f738c0a372d36a10dfae6dc357717c13b2aa72f4 affected
f2a0a630b953451a59a2612ad8c29246638f0a38< a60c36d8d17f1b86705523d5eb6d290df28831e5 affected
f2a0a630b953451a59a2612ad8c29246638f0a38< 61a25b8d333e1eb2a189881d516f8d5194e26840 affected
f2a0a630b953451a59a2612ad8c29246638f0a38< 0ca79979384f031d710c4b3bae065dcb5d95aca3 affected
6.0 affected
< 6.0 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-92514

Vulnerability Information
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Vulnerability Title
RDMA/erdma: Fix CEQ tasklet use-after-free on removal
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix CEQ tasklet use-after-free on removal Each CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls erdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring through get_next_valid_eqe() and updates eq->dbrec through notify_eq(). erdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ. free_irq() prevents another hard IRQ and waits for an in-flight handler, but it does not drain a tasklet that the handler already scheduled. The tasklet can therefore access eq->qbuf or eq->dbrec after erdma_eq_destroy() frees them. Clearing ceq_cb->ready does not synchronize with a tasklet that already passed the check at the start of erdma_ceq_completion_handler(). Kill the tasklet after free_irq(), when no handler can schedule it again, and before erdma_ceq_uninit_one() releases the EQ buffers.
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 f2a0a630b953451a59a2612ad8c29246638f0a38 ~ 0e8b78dabb1f156db05ffe74c6eae861167c7c21 -
Linux Linux 6.0 -

II. Public POCs for CVE-2026-92514

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III. Intelligence Information for CVE-2026-92514

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Patches & Fixes for CVE-2026-92514 (5)

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

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-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
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-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
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-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
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

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-2026-92514

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