CVE-2022-50666

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-12-09. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

RDMA/siw: Fix QP destroy to wait for all references dropped.

Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siw_qp_destroy() call, so siw must not hold any remaining reference to the QP upon return. A use-after-free was encountered in xfstest generic/460, while testing NFSoRDMA. Here, after a TCP connection drop by peer, the triggered siw_cm_work_handler got delayed until after QP destroy call, referencing a QP which has already freed.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

December 9, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

RDMA/siw: Fix QP destroy to wait for all references dropped. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3c278807a459e6f50afee6971cabe74cccfb490
generic

RDMA/siw: Fix QP destroy to wait for all references dropped. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737
generic

RDMA/siw: Fix QP destroy to wait for all references dropped. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/74ad141e995a730760b1bcfa14854b7f1057d6bc
generic

RDMA/siw: Fix QP destroy to wait for all references dropped. - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5c75d608fad58301b63e7d69200c13c3a1d411da

Vendor Advisories for CVE-2022-50666(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.15.75—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Data Freshness Timeline

(refreshed 15× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 154 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 09:19 UTCEG score recompute
  3. 2026-08-05 09:18 UTCGHSA enrichment
  4. 2026-08-04 15:07 UTCEPSS rescore
  5. 2026-08-04 10:52 UTCEG score recompute
  6. 2026-08-04 10:52 UTCGHSA enrichment
  7. 2026-08-04 10:35 UTCEPSS rescore
  8. 2026-08-04 09:26 UTCEG score recompute▲ 9.80
  9. 2026-08-04 09:26 UTCGHSA enrichment
  10. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  11. 2026-08-03 10:33 UTCEPSS rescore
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  25. 2026-07-23 02:17 UTCEG score recompute
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Frequently asked(5)

What is CVE-2022-50666?
CVE-2022-50666 is a critical vulnerability published on December 9, 2025. In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siwqpdestroy() call, so…
When was CVE-2022-50666 disclosed?
CVE-2022-50666 was first published in the National Vulnerability Database on December 9, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50666 actively exploited?
CVE-2022-50666 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.1% of all scored CVEs.
What is the CVSS score of CVE-2022-50666?
CVE-2022-50666 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50666?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50666, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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