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CVE-2026-93108— RDMA/ipoib: Drain RCU callbacks during module teardown

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/ipoib：在模块卸载过程中排空 RCU 回调 IPoIB 的回收完成信号可能在 RCU 回调内部发出。 模块卸载过程可能在回调返回之前唤醒，并卸载 模块，而该模块的代码仍在执行中。 客户端注册失败也可能移除已添加的设备并排空回调。应在客户端和工作队列卸载完成后再等待。

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b63b70d8774175b6f8393c495fe455f0fba55ce1< bb9c23733a0c50e136bd40c27cb60023cc58e22c affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 4a6dc313f9661f80e4ed43461d7ed5615c2450ca affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< d8917353966d1d5a486437dd0dd68a2cf8ecb136 affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 7bc08d7f9338c9f9c09965e5d020591c793a80cb affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 2b3330cfc097db2d31f47ad09261967630270d66 affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 8dc5ffcb8efcc01e44dd1ebc490eaae72de3fadf affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 24ce944721dcd92ae62e7a448d770e2a3e79f5fd affected
b63b70d8774175b6f8393c495fe455f0fba55ce1< 31b7c700670830a0e8a4cdcd451c88a13cc5dc48 affected
… +10 more rows
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I. Basic Information for CVE-2026-93108

Vulnerability Information
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Vulnerability Title
RDMA/ipoib: Drain RCU callbacks during module teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/ipoib: Drain RCU callbacks during module teardown IPoIB reclamation completions can be signaled from inside an RCU callback. Teardown can wake before the callback returns and unload ib_ipoib while its code is still executing. Client registration failure can also remove already-added devices and queue callbacks. Wait after client and workqueue teardown.
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 b63b70d8774175b6f8393c495fe455f0fba55ce1 ~ bb9c23733a0c50e136bd40c27cb60023cc58e22c -
Linux Linux 3.6 -

II. Public POCs for CVE-2026-93108

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III. Intelligence Information for CVE-2026-93108

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Patches & Fixes for CVE-2026-93108 (7)

Other References for CVE-2026-93108 (1)

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-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
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-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

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-2026-93108

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