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Full vulnerability report · 2023
CVE-2023-3019High confidence

Qemu: e1000e: heap use-after-free in e1000e_write_packet_to_guest()

Red Hat · Red Hat Enterprise Linux 8

6.0MediumCVSS 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
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-577017 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-577017: Multiple Vulnerabilities in Ruggedcom Rox Before 2.17.1
11 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • RUGGEDCOM ROX MX5000
  • RUGGEDCOM ROX MX5000RE
  • RUGGEDCOM ROX RX1400
  • RUGGEDCOM ROX RX1500
  • RUGGEDCOM ROX RX1501
  • RUGGEDCOM ROX RX1510
  • RUGGEDCOM ROX RX1511
  • RUGGEDCOM ROX RX1512
  • RUGGEDCOM ROX RX1524
  • RUGGEDCOM ROX RX1536
  • RUGGEDCOM ROX RX5000
Summary
A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.
Remediation
Update to V2.17.1 or later version
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-2023-43711

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

A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

What

A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may disrupt the affected service.

What

A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with elevated privileges. If successful, the issue may disrupt the affected service.

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 → Use After Free → disrupt the affected service
Attack surface
Local
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416 ↗

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

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:H/UI:N/S:C/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.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security 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.
Denial of serviceCWE-416
A

Official authority intelligence

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

BSI · German · WID-SEC-2023-1731QEMU: Schwachstelle ermöglicht Denial of Service

Ein lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20230726Security Bulletin 26 Jul 2023

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 26 Jul 2023, published on 26 July 2023. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0018Multiples vulnérabilités dans les produits Juniper Networks

cord?id=CVE-2006-5051 Référence CVE CVE-2016-2183 https://www.cve.org/CVERecord?id=CVE-2016-2183 Référence CVE CVE-2020-11022 https://www.cve.org/CVERecord?id=CVE-2020-11022 Référence CVE CVE-2022-24805 https://www.cve.org/CVERecord?id=CVE-2022-24805 Référence CVE CVE-2022-24806 https://www.cve.org/CVERecord?id=CVE-2022-24806 Référence CVE CVE-2022-24807 https://www.cve.org/CVERecord?id=CVE-2022-24807 Référence CVE CVE-2022-24808 https://www.cve.org/CVERecord?id=CVE-2022-24808 Référence CVE CVE-2022-24809 https://www.cve.org/CVERecord?id=CVE-2022-24809 Référence CVE CVE-2022-24810 https://www.cve.org/CVERecord?id=CVE-2022-24810 Référence CVE CVE-2023-3019 https://www.cve.org/CVERecord?id=CVE-2023-3019 Référence CVE CVE-2023-3255 https://www.cve.org/CVERecord?id=CVE-2023-3255 Référence CVE CVE-2023-42467 https://www.cve.org/CVERecord?id=CVE-2023-42467 Référence CVE CVE-2023-4408 https://www.cve.org/CVERecord?id=CVE-2023-4408 Référence CVE CVE-2023-50387 https://www.cve.org/CVERecord?id=CVE-2023-50387 Référence CVE CVE-2023-50868 https://www.cve.org/CVERecord?id=CVE-2023-50868 Référence CVE CVE-2023-5088 https://www.cve.org/CVERecord?id=CVE-2023-5088 Référence CVE CVE-2023-52463 https://www.cve.org/CVERecord?id=CVE-2023-52463 Référence CVE CVE-2023-52801 https://www.cve.org/CVERecord?id=CVE-202

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0997Multiples vulnérabilités dans le noyau Linux d'Ubuntu

g/CVERecord?id=CVE-2020-13765 Référence CVE CVE-2020-1983 https://www.cve.org/CVERecord?id=CVE-2020-1983 Référence CVE CVE-2020-7039 https://www.cve.org/CVERecord?id=CVE-2020-7039 Référence CVE CVE-2020-8608 https://www.cve.org/CVERecord?id=CVE-2020-8608 Référence CVE CVE-2021-3592 https://www.cve.org/CVERecord?id=CVE-2021-3592 Référence CVE CVE-2021-3594 https://www.cve.org/CVERecord?id=CVE-2021-3594 Référence CVE CVE-2021-47212 https://www.cve.org/CVERecord?id=CVE-2021-47212 Référence CVE CVE-2022-36402 https://www.cve.org/CVERecord?id=CVE-2022-36402 Référence CVE CVE-2022-48666 https://www.cve.org/CVERecord?id=CVE-2022-48666 Référence CVE CVE-2023-3019 https://www.cve.org/CVERecord?id=CVE-2023-3019 Référence CVE CVE-2023-52528 https://www.cve.org/CVERecord?id=CVE-2023-52528 Référence CVE CVE-2023-52531 https://www.cve.org/CVERecord?id=CVE-2023-52531 Référence CVE CVE-2023-52614 https://www.cve.org/CVERecord?id=CVE-2023-52614 Référence CVE CVE-2023-52887 https://www.cve.org/CVERecord?id=CVE-2023-52887 Référence CVE CVE-2023-52888 https://www.cve.org/CVERecord?id=CVE-2023-52888 Référence CVE CVE-2023-52889 https://www.cve.org/CVERecord?id=CVE-2023-52889 Référence CVE CVE-2023-52918 https://www.cve.org/CVERecord?id=CVE-2023-52918 Référence CVE CVE-2024-25741 https://www.cve.org/CVERecord?id=C

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2023-020512Fabrice Bellard の QEMU 等複数ベンダの製品における解放済みメモリの使用に関する脆弱性

Fabrice Bellard の QEMU 等複数ベンダの製品には、解放済みメモリの使用に関する脆弱性が存在します。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0147Kwetsbaarheden verholpen in Siemens-producten

Multiple security vulnerabilities in QEMU, including heap buffer overflow, use-after-free, NULL pointer dereference, DMA reentrancy, and integer overflow, affect various components such as e1000e NIC emulation and Virtio, leading to denial of service, data disclosure, and potential code execution.

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
Fixed
Action
Update to V2.17.1 or later version
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 24 Jul 2023 · Last source change 12 May 2026, 10:12 UTC · CWE-416 · Use After Free

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-2023-43711
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2023-43711↗Vendor CSAF · Siemens ProductCERT↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2023-3019 · cve.blacktree.nl