# CVE-2026-31565: RDMA/irdma: Fix deadlock during netdev reset with active connections

Status: published. Published: 2026-04-24. Updated: 2026-11-05.

In the Linux kernel, the following vulnerability has been resolved:

RDMA/irdma: Fix deadlock during netdev reset with active connections

Resolve deadlock that occurs when user executes netdev reset while RDMA
applications (e.g., rping) are active. The netdev reset causes ice
driver to remove irdma auxiliary driver, triggering device_delete and
subsequent client removal. During client removal, uverbs_client waits
for QP reference count to reach zero while cma_client holds the final
reference, creating circular dependency and indefinite wait in iWARP
mode. Skip QP reference count wait during device reset to prevent
deadlock.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 0b3c392b82cdf867808a8ea7c6760d3c7e6b6627; < 009831768faeca3fb5950ce63f1b49594ec82389 (affected, git); ≥ 07322c8a12d6c796450faacb8be9e5e3c278ec84; < adf0de36e52a48681eb58cbd7cbf6c8d200caa2b (affected, git); ≥ c8f304d75f6c6cc679a73f89591f9a915da38f09; < acb060bc2609c2eab49263968be59c7d59d497bc (affected, git); ≥ c8f304d75f6c6cc679a73f89591f9a915da38f09; < a8a1c7621127a15a02494b96ee376406c064237b (affected, git); ≥ c8f304d75f6c6cc679a73f89591f9a915da38f09; < cd8bcec2de5e24e05c34c9391940fda6f50e79b4 (affected, git); ≥ c8f304d75f6c6cc679a73f89591f9a915da38f09; < 464bbb844ba5b68e038220c34019069a0a9f1581 (affected, git); ≥ c8f304d75f6c6cc679a73f89591f9a915da38f09; < 6f52370970ac07d352a7af4089e55e0e6425f827 (affected, git); 6ee53f82540769a6d6e77e40b901f9b9edfa5ff2 (affected, git); ≥ 5.15.116; < 5.15.203 (affected, semver); ≥ 6.1.33; < 6.1.168 (affected, semver); ≥ 6.3.7; < 6.4 (affected, semver). Source: CNA: Linux
- Linux / Linux: 6.4 (affected); ≥ 0; < 6.4 (unaffected, semver); ≥ 5.15.203; ≤ 5.15.* (unaffected, semver); ≥ 6.1.168; ≤ 6.1.* (unaffected, semver); ≥ 6.6.131; ≤ 6.6.* (unaffected, semver); ≥ 6.12.80; ≤ 6.12.* (unaffected, semver); ≥ 6.18.21; ≤ 6.18.* (unaffected, semver); ≥ 6.19.11; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux
- Siemens / SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.6; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.7; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: ≥ V3.1.6; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: ≥ V3.1.7; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.6; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.7; < * (affected, custom). Source: ADP: siemens-SADP

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.10% as of 2026-11-05; percentile 0.83%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/009831768faeca3fb5950ce63f1b49594ec82389 (CNA: Linux)

- https://git.kernel.org/stable/c/adf0de36e52a48681eb58cbd7cbf6c8d200caa2b (CNA: Linux)

- https://git.kernel.org/stable/c/acb060bc2609c2eab49263968be59c7d59d497bc (CNA: Linux)

- https://git.kernel.org/stable/c/a8a1c7621127a15a02494b96ee376406c064237b (CNA: Linux)

- https://git.kernel.org/stable/c/cd8bcec2de5e24e05c34c9391940fda6f50e79b4 (CNA: Linux)

- https://git.kernel.org/stable/c/464bbb844ba5b68e038220c34019069a0a9f1581 (CNA: Linux)

- https://git.kernel.org/stable/c/6f52370970ac07d352a7af4089e55e0e6425f827 (CNA: Linux)

- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (ADP: siemens-SADP)

- https://cert-portal.siemens.com/productcert/html/ssa-019113.html (ADP: siemens-SADP)

- https://cert-portal.siemens.com/productcert/html/ssa-457936.html (ADP: siemens-SADP)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-31565; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-31565; retrieved 2026-11-05; source updated Not reported

Revision: 47652ede54e4b984ef95eb32c374d00ed24d64b32c011a5972fe8da85c447fb5

Canonical: https://y2.dev/cve/CVE-2026-31565

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