CVE-2026-80647

RDMA/hns: Fix warning in poll cq direct mode

N/A

Published: August 28, 2026 at 06:48 AM UTC

Updated: August 28, 2026 at 08:32 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix warning in poll cq direct mode CQs allocated by ib_alloc_cq() always have a comp_handler. Though in direct mode this handler is never expected to be called, it is still called when the driver is reset, triggering the following WARN_ONCE(): Call trace: ib_cq_completion_direct+0x38/0x60 hns_roce_cq_completion+0x54/0x90 (hns_roce_hw_v2] hns_roce_handle_device_err+Ox1c8/0x340 [hns_roce_hw_v2] hns_roce_hw_v2_uninit_instance.constprop.0+0x34/0x70 [hns_roce_hw_v2] hns_roce_hw_v2_reset_notify+0xc4/0xe0 [hns_roce_hw_v2] hclge_notify_roce_client+0x60/0xbc [hclge] hclge_reset_rebuild+0x48/0x34c [hclge] hclge_reset_subtask+0xcc/0xec [hclge] hclge_reset_service_task+0x80/0x160 [hclge] hclge_service_task+0x50/0x80 (hclge] process_one_work+0x1cc/0x4d0 worker_thread+0x154/0x414 kthread+0x104/0x144 ret_from_fork+0x10/0x18

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.5 ≤ v < 5.10.2615.5 ≤ v < 5.15.2125.5 ≤ v < 6.1.1785.5 ≤ v < 6.12.975.5 ≤ v < 6.18.405.5 ≤ v < 6.6.1455.5 ≤ v < 7.1.55.5 ≤ v < 7.25.5f295e4cece5cb4c60715fed539abcd62468f9ef1

Vendor states this is fixed in 16138ea9833d6bb1bed37a3321f282242704bf02 (fixed)

Vendor states this is fixed in 1e56f8886d64288cf88d80af44c7b9148aeaa98b (fixed)

Vendor states this is fixed in 3f19c2a3852e6ba75f3e92dd5edc4e07f3d07f4a (fixed)

Vendor states this is fixed in 95b2e44bc1e5c5d93bb58e178d914dd99a3baa6f (fixed)

Vendor states this is fixed in 9f05319149c14acedb83e2c2842ec4b38992ad9f (fixed)

Vendor states this is fixed in a075a7acd155ffdd058e72eb3f4cce1207ebafa1 (fixed)

Vendor states this is fixed in c028c1977b6e61eee26bb69332453efb6513f83b (fixed)

Vendor states this is fixed in e7d363c0ffa836ac1d89657686cad241392c5eb2 (fixed)

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 5.5 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)