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Full vulnerability report · 2025
CVE-2022-50666High confidence

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

Linux · Linux

9.8CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

9 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcp-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatency-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 10 Sept 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2022-55739

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
01

What, why and how

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.

What

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.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticated
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2025-2765Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0225Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50649 Référence CVE CVE-2022-50652 https://www.cve.org/CVERecord?id=CVE-2022-50652 Référence CVE CVE-2022-50653 https://www.cve.org/CVERecord?id=CVE-2022-50653 Référence CVE CVE-2022-50656 https://www.cve.org/CVERecord?id=CVE-2022-50656 Référence CVE CVE-2022-50658 https://www.cve.org/CVERecord?id=CVE-2022-50658 Référence CVE CVE-2022-50660 https://www.cve.org/CVERecord?id=CVE-2022-50660 Référence CVE CVE-2022-50661 https://www.cve.org/CVERecord?id=CVE-2022-50661 Référence CVE CVE-2022-50662 https://www.cve.org/CVERecord?id=CVE-2022-50662 Référence CVE CVE-2022-50664 https://www.cve.org/CVERecord?id=CVE-2022-50664 Référence CVE CVE-2022-50666 https://www.cve.org/CVERecord?id=CVE-2022-50666 Référence CVE CVE-2022-50668 https://www.cve.org/CVERecord?id=CVE-2022-50668 Référence CVE CVE-2022-50669 https://www.cve.org/CVERecord?id=CVE-2022-50669 Référence CVE CVE-2022-50670 https://www.cve.org/CVERecord?id=CVE-2022-50670 Référence CVE CVE-2022-50671 https://www.cve.org/CVERecord?id=CVE-2022-50671 Référence CVE CVE-2022-50672 https://www.cve.org/CVERecord?id=CVE-2022-50672 Référence CVE CVE-2022-50673 https://www.cve.org/CVERecord?id=CVE-2022-50673 Référence CVE CVE-2022-50675 https://www.cve.org/CVERecord?id=CVE-2022-50675 Référence CVE CVE-2022-50677 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0170Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50649 Référence CVE CVE-2022-50652 https://www.cve.org/CVERecord?id=CVE-2022-50652 Référence CVE CVE-2022-50653 https://www.cve.org/CVERecord?id=CVE-2022-50653 Référence CVE CVE-2022-50656 https://www.cve.org/CVERecord?id=CVE-2022-50656 Référence CVE CVE-2022-50658 https://www.cve.org/CVERecord?id=CVE-2022-50658 Référence CVE CVE-2022-50660 https://www.cve.org/CVERecord?id=CVE-2022-50660 Référence CVE CVE-2022-50661 https://www.cve.org/CVERecord?id=CVE-2022-50661 Référence CVE CVE-2022-50662 https://www.cve.org/CVERecord?id=CVE-2022-50662 Référence CVE CVE-2022-50664 https://www.cve.org/CVERecord?id=CVE-2022-50664 Référence CVE CVE-2022-50666 https://www.cve.org/CVERecord?id=CVE-2022-50666 Référence CVE CVE-2022-50668 https://www.cve.org/CVERecord?id=CVE-2022-50668 Référence CVE CVE-2022-50669 https://www.cve.org/CVERecord?id=CVE-2022-50669 Référence CVE CVE-2022-50670 https://www.cve.org/CVERecord?id=CVE-2022-50670 Référence CVE CVE-2022-50671 https://www.cve.org/CVERecord?id=CVE-2022-50671 Référence CVE CVE-2022-50672 https://www.cve.org/CVERecord?id=CVE-2022-50672 Référence CVE CVE-2022-50673 https://www.cve.org/CVERecord?id=CVE-2022-50673 Référence CVE CVE-2022-50675 https://www.cve.org/CVERecord?id=CVE-2022-50675 Référence CVE CVE-2022-50676 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0108Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50652 Référence CVE CVE-2022-50653 https://www.cve.org/CVERecord?id=CVE-2022-50653 Référence CVE CVE-2022-50656 https://www.cve.org/CVERecord?id=CVE-2022-50656 Référence CVE CVE-2022-50658 https://www.cve.org/CVERecord?id=CVE-2022-50658 Référence CVE CVE-2022-50660 https://www.cve.org/CVERecord?id=CVE-2022-50660 Référence CVE CVE-2022-50661 https://www.cve.org/CVERecord?id=CVE-2022-50661 Référence CVE CVE-2022-50662 https://www.cve.org/CVERecord?id=CVE-2022-50662 Référence CVE CVE-2022-50664 https://www.cve.org/CVERecord?id=CVE-2022-50664 Référence CVE CVE-2022-50665 https://www.cve.org/CVERecord?id=CVE-2022-50665 Référence CVE CVE-2022-50666 https://www.cve.org/CVERecord?id=CVE-2022-50666 Référence CVE CVE-2022-50667 https://www.cve.org/CVERecord?id=CVE-2022-50667 Référence CVE CVE-2022-50668 https://www.cve.org/CVERecord?id=CVE-2022-50668 Référence CVE CVE-2022-50669 https://www.cve.org/CVERecord?id=CVE-2022-50669 Référence CVE CVE-2022-50670 https://www.cve.org/CVERecord?id=CVE-2022-50670 Référence CVE CVE-2022-50671 https://www.cve.org/CVERecord?id=CVE-2022-50671 Référence CVE CVE-2022-50672 https://www.cve.org/CVERecord?id=CVE-2022-50672 Référence CVE CVE-2022-50673 https://www.cve.org/CVERecord?id=CVE-2022-50673 Référence CVE CVE-2022-50675 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 5c75d608fad58301b63e7d69200c13c3a1d411da; 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 74ad141e995a730760b1bcfa14854b7f1057d6bc; 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737; 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < a3c278807a459e6f50afee6971cabe74cccfb490; 5.3
Fixed
< 5.3; 5.15.75 ≤ 5.15.*; 5.19.17 ≤ 5.19.*; 6.0.3 ≤ 6.0.*; 6.1 ≤ *
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 9 Dec 2025 · Last source change 5 Aug 2026, 08:59 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2022-55739
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD not scheduled

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2022-50666 · cve.blacktree.nl