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Full vulnerability report · 2025
CVE-2023-53528High confidence

RDMA/rxe: Fix unsafe drain work queue code

Linux · Linux

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

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-intelAffected, 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-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-2025-32740

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix unsafe drain work queue code If create_qp does not fully succeed it is possible for qp cleanup code to attempt to drain the send or recv work queues before the queues have been created causing a seg fault. This patch checks to see if the queues exist before attempting to drain them.

What

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix unsafe drain work queue code If create_qp does not fully succeed it is possible for qp cleanup code to attempt to drain the send or recv work queues before the queues have been created causing a seg fault. This patch checks to see if the queues exist before attempting to drain them.

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 local access may attempt exploitation with low privileges. 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/rxe: Fix unsafe drain work queue code If create_qp does not fully succeed it is possible for qp cleanup code to attempt to drain the send or recv work queues before the queues have been created causing a seg fault. This patch checks to see if the queues exist before attempting to drain them.

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 local access may attempt exploitation with low privileges. 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
local access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2025-2187Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen und um nicht nähere beschriebene Effekte zu verursachen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1032Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53510 Référence CVE CVE-2023-53515 https://www.cve.org/CVERecord?id=CVE-2023-53515 Référence CVE CVE-2023-53516 https://www.cve.org/CVERecord?id=CVE-2023-53516 Référence CVE CVE-2023-53518 https://www.cve.org/CVERecord?id=CVE-2023-53518 Référence CVE CVE-2023-53519 https://www.cve.org/CVERecord?id=CVE-2023-53519 Référence CVE CVE-2023-53520 https://www.cve.org/CVERecord?id=CVE-2023-53520 Référence CVE CVE-2023-53523 https://www.cve.org/CVERecord?id=CVE-2023-53523 Référence CVE CVE-2023-53526 https://www.cve.org/CVERecord?id=CVE-2023-53526 Référence CVE CVE-2023-53527 https://www.cve.org/CVERecord?id=CVE-2023-53527 Référence CVE CVE-2023-53528 https://www.cve.org/CVERecord?id=CVE-2023-53528 Référence CVE CVE-2023-53530 https://www.cve.org/CVERecord?id=CVE-2023-53530 Référence CVE CVE-2023-53531 https://www.cve.org/CVERecord?id=CVE-2023-53531 Référence CVE CVE-2023-53533 https://www.cve.org/CVERecord?id=CVE-2023-53533 Référence CVE CVE-2023-53534 https://www.cve.org/CVERecord?id=CVE-2023-53534 Référence CVE CVE-2023-53538 https://www.cve.org/CVERecord?id=CVE-2023-53538 Référence CVE CVE-2023-53539 https://www.cve.org/CVERecord?id=CVE-2023-53539 Référence CVE CVE-2023-53540 https://www.cve.org/CVERecord?id=CVE-2023-53540 Référence CVE CVE-2023-53541 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1009Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53510 Référence CVE CVE-2023-53515 https://www.cve.org/CVERecord?id=CVE-2023-53515 Référence CVE CVE-2023-53516 https://www.cve.org/CVERecord?id=CVE-2023-53516 Référence CVE CVE-2023-53518 https://www.cve.org/CVERecord?id=CVE-2023-53518 Référence CVE CVE-2023-53519 https://www.cve.org/CVERecord?id=CVE-2023-53519 Référence CVE CVE-2023-53520 https://www.cve.org/CVERecord?id=CVE-2023-53520 Référence CVE CVE-2023-53523 https://www.cve.org/CVERecord?id=CVE-2023-53523 Référence CVE CVE-2023-53526 https://www.cve.org/CVERecord?id=CVE-2023-53526 Référence CVE CVE-2023-53527 https://www.cve.org/CVERecord?id=CVE-2023-53527 Référence CVE CVE-2023-53528 https://www.cve.org/CVERecord?id=CVE-2023-53528 Référence CVE CVE-2023-53530 https://www.cve.org/CVERecord?id=CVE-2023-53530 Référence CVE CVE-2023-53531 https://www.cve.org/CVERecord?id=CVE-2023-53531 Référence CVE CVE-2023-53538 https://www.cve.org/CVERecord?id=CVE-2023-53538 Référence CVE CVE-2023-53539 https://www.cve.org/CVERecord?id=CVE-2023-53539 Référence CVE CVE-2023-53540 https://www.cve.org/CVERecord?id=CVE-2023-53540 Référence CVE CVE-2023-53541 https://www.cve.org/CVERecord?id=CVE-2023-53541 Référence CVE CVE-2023-53543 https://www.cve.org/CVERecord?id=CVE-2023-53543 Référence CVE CVE-2023-53545 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0921Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53518 Référence CVE CVE-2023-53519 https://www.cve.org/CVERecord?id=CVE-2023-53519 Référence CVE CVE-2023-53520 https://www.cve.org/CVERecord?id=CVE-2023-53520 Référence CVE CVE-2023-53521 https://www.cve.org/CVERecord?id=CVE-2023-53521 Référence CVE CVE-2023-53523 https://www.cve.org/CVERecord?id=CVE-2023-53523 Référence CVE CVE-2023-53524 https://www.cve.org/CVERecord?id=CVE-2023-53524 Référence CVE CVE-2023-53525 https://www.cve.org/CVERecord?id=CVE-2023-53525 Référence CVE CVE-2023-53526 https://www.cve.org/CVERecord?id=CVE-2023-53526 Référence CVE CVE-2023-53527 https://www.cve.org/CVERecord?id=CVE-2023-53527 Référence CVE CVE-2023-53528 https://www.cve.org/CVERecord?id=CVE-2023-53528 Référence CVE CVE-2023-53530 https://www.cve.org/CVERecord?id=CVE-2023-53530 Référence CVE CVE-2023-53531 https://www.cve.org/CVERecord?id=CVE-2023-53531 Référence CVE CVE-2023-5633 https://www.cve.org/CVERecord?id=CVE-2023-5633 Référence CVE CVE-2024-26583 https://www.cve.org/CVERecord?id=CVE-2024-26583 Référence CVE CVE-2024-26584 https://www.cve.org/CVERecord?id=CVE-2024-26584 Référence CVE CVE-2024-26661 https://www.cve.org/CVERecord?id=CVE-2024-26661 Référence CVE CVE-2024-46733 https://www.cve.org/CVERecord?id=CVE-2024-46733 Référence CVE CVE-2024-49974 https://www.cve.org/CVERecord?id=CV

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0895Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53518 Référence CVE CVE-2023-53519 https://www.cve.org/CVERecord?id=CVE-2023-53519 Référence CVE CVE-2023-53520 https://www.cve.org/CVERecord?id=CVE-2023-53520 Référence CVE CVE-2023-53521 https://www.cve.org/CVERecord?id=CVE-2023-53521 Référence CVE CVE-2023-53523 https://www.cve.org/CVERecord?id=CVE-2023-53523 Référence CVE CVE-2023-53524 https://www.cve.org/CVERecord?id=CVE-2023-53524 Référence CVE CVE-2023-53525 https://www.cve.org/CVERecord?id=CVE-2023-53525 Référence CVE CVE-2023-53526 https://www.cve.org/CVERecord?id=CVE-2023-53526 Référence CVE CVE-2023-53527 https://www.cve.org/CVERecord?id=CVE-2023-53527 Référence CVE CVE-2023-53528 https://www.cve.org/CVERecord?id=CVE-2023-53528 Référence CVE CVE-2023-53530 https://www.cve.org/CVERecord?id=CVE-2023-53530 Référence CVE CVE-2023-53531 https://www.cve.org/CVERecord?id=CVE-2023-53531 Référence CVE CVE-2023-53532 https://www.cve.org/CVERecord?id=CVE-2023-53532 Référence CVE CVE-2023-5633 https://www.cve.org/CVERecord?id=CVE-2023-5633 Référence CVE CVE-2024-26583 https://www.cve.org/CVERecord?id=CVE-2024-26583 Référence CVE CVE-2024-26584 https://www.cve.org/CVERecord?id=CVE-2024-26584 Référence CVE CVE-2024-26661 https://www.cve.org/CVERecord?id=CVE-2024-26661 Référence CVE CVE-2024-46733 https://www.cve.org/CVERecord?id=CV

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
49dc9c1f0c7e396654a31a480328fffd902fa494 < da572f6313aeead1f79e0810666bd8d8ffc794d4; 49dc9c1f0c7e396654a31a480328fffd902fa494 < d366642b3099bd322375f5b71ba84ab1d586cd6d; 49dc9c1f0c7e396654a31a480328fffd902fa494 < 5993b75d0bc71cd2b441d174b028fc36180f032c; 6.4
Fixed
< 6.4; 6.4.16 ≤ 6.4.*; 6.5.3 ≤ 6.5.*; 6.6 ≤ *
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 1 Oct 2025 · Last source change 11 May 2026, 19:46 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2025-32740
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD enriched

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-2023-53528 · cve.blacktree.nl