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Linux KernelOperating system · Linux

CVE-2026-46265

HIGH · 7.5 CVSS v3.1 Published 2026-06-03
Fix available
A fix is available. Upgrade to 6.1.165 / 6.6.128 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix WQ_MEM_RECLAIM warning When sunrpc is used, if a reset triggered, our wq may lead the following trace: workqueue: WQ_MEM_RECLAIM xprtiod:xprt_rdma_connect_worker [rpcrdma] is flushing !WQ_MEM_RECLAIM hns_roce_irq_workq:flush_work_handle [hns_roce_hw_v2] WARNING: CPU: 0 PID: 8250 at kernel/workqueue.c:2644 check_flush_dependency+0xe0/0x144 Call trace: check_flush_dependency+0xe0/0x144 start_flush_work.constprop.0+0x1d0/0x2f0 __flush_work.isra.0+0x40/0xb0 flush_work+0x14/0x30 hns_roce_v2_destroy_qp+0xac/0x1e0 [hns_roce_hw_v2] ib_destroy_qp_user+0x9c/0x2b4 rdma_destroy_qp+0x34/0xb0 rpcrdma_ep_destroy+0x28/0xcc [rpcrdma] rpcrdma_ep_put+0x74/0xb4 [rpcrdma] rpcrdma_xprt_disconnect+0x1d8/0x260 [rpcrdma] xprt_rdma_connect_worker+0xc0/0x120 [rpcrdma] process_one_work+0x1cc/0x4d0 worker_thread+0x154/0x414 kthread+0x104/0x144 ret_from_fork+0x10/0x18 Since QP destruction frees memory, this wq should have the WQ_MEM_RECLAIM.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 5.7, < 6.1.165>= 6.2, < 6.6.128>= 6.7, < 6.12.75>= 6.13, < 6.18.14>= 6.19, < 6.19.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.1.165 / 6.6.128 / 6.12.75 or later
Fixed in 6.1.1656.6.1286.12.75
Vendor patch git.kernel.org →
Recommended fix High confidence

6.1.165 (for 6.1.x) / 6.6.128 (for 6.2-6.5.x) / 6.12.75 (for 6.7-6.11.x) / 6.18.14 (for 6.13-6.17.x)

  1. Identify the currently running kernel version using `uname -r`
  2. Determine which version branch your kernel is on (e.g., 6.1.x, 6.2.x, 6.6.x, 6.7.x, 6.12.x, or 6.13+)
  3. Upgrade the kernel to the first fixed version for your branch: For 6.1.x kernels, upgrade to 6.1.165 or later; For 6.2.x through 6.5.x kernels, upgrade to 6.6.128 or later; For 6.7.x through 6.11.x kernels, upgrade to 6.12.75 or later; For 6.13.x through 6.17.x kernels, upgrade to 6.18.14 or later
  4. Reboot the system to load the patched kernel
  5. Verify the fix is applied by checking the kernel version and confirming the workqueue warning no longer appears in dmesg during RDMA operations
Caveat Kernel upgrades carry standard reboot requirements and potential module compatibility risks; this specific fix adds WQ_MEM_RECLAIM flag to a workqueue and is low-risk

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-46265 in production — separate from our analysis above.

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