BlackTreeCVE Intelligence
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Full vulnerability report · 2015
CVE-2015-8104High confidence

n/a: security vulnerability

n/a · n/a

10.0CriticalCVSS 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 11 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 11 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 11 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 11 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 11 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 11 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 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivevirtualboxUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivexenUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical record ↗Source updated 11 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-2015-7996

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

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.

What

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.

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 disrupt the affected service.

What

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.

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 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
a network path → vulnerable operation → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
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-399 ↗

CWE-399. Open the MITRE definition for the exact weakness description.

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:C/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.SChangedScope: The attack can affect a component governed by a different security 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.
NetworkUnauthenticatedDenial of serviceCWE-399
A

Official authority intelligence

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

Canadian Centre for Cyber Security · English · AV17-050Juniper Networks Security Advisories

Number: AV17-050 Date: 19 April 2017 Purpose The purpose of this advisory is to bring attention to security advisories released by Juniper Networks. Assessment Juniper Networks has released product updates addressing security issues for multiple products. Affected Products: • Juniper EX Series • Juniper SRX, vSRX and J-Series • Junos OS • NorthStar Controller Application CVE References: CVE-2015-1349, CVE-2015-2808, CVE-2015-3209, CVE-2015-3456, CVE-2015-4620, CVE-2015-5307, CVE-2015-5477, CVE-2015-7973, CVE-2015-7979, CVE-2015-8104, CVE-2015-8138, CVE-2015-8158, CVE-2016-7427, CVE-2016-7429, CVE-2016-7431, CVE-2016-8864, CVE-2016-9131, CVE-2016-9147, CVE-2016-9310, CVE-2016-9311, CVE-2016-9444, CVE-2017-2312, CVE-2017-2313, CVE-2017-2315, CVE-2017-2316, CVE-2017-2317, CVE-2017-2318, CVE-2017-2319, CVE-2017-2320, CVE-2017-2321, CVE-2017-2322, CVE-2017-2323, CVE-2017-2324, CVE-2017-2325, CVE-2017-2326, CVE-2017-2327, CVE-2017-2328, , CVE-2017-2329, CVE-2017-2330, CVE-2017-2331, CVE-2017-2332, CVE-2017-2333, CVE-2017-2334, CVE-2017-2340 Suggested Action CCIRC recommends that system administrators test and deploy the vendor released updates on affected platforms accordingl

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0834Multiples vulnérabilités dans Xen

De multiples vulnérabilités ont été découvertes dans Xen . Elles permettent à un attaquant de provoquer un déni de service, une élévation de privilèges et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-184Multiples vulnérabilités dans les produits Juniper

.cve.org/CVERecord?id=CVE-2015-2925 Référence CVE CVE-2015-3193 https://www.cve.org/CVERecord?id=CVE-2015-3193 Référence CVE CVE-2015-3644 https://www.cve.org/CVERecord?id=CVE-2015-3644 Référence CVE CVE-2015-5156 https://www.cve.org/CVERecord?id=CVE-2015-5156 Référence CVE CVE-2015-5157 https://www.cve.org/CVERecord?id=CVE-2015-5157 Référence CVE CVE-2015-5307 https://www.cve.org/CVERecord?id=CVE-2015-5307 Référence CVE CVE-2015-7550 https://www.cve.org/CVERecord?id=CVE-2015-7550 Référence CVE CVE-2015-7613 https://www.cve.org/CVERecord?id=CVE-2015-7613 Référence CVE CVE-2015-7872 https://www.cve.org/CVERecord?id=CVE-2015-7872 Référence CVE CVE-2015-8104 https://www.cve.org/CVERecord?id=CVE-2015-8104 Référence CVE CVE-2015-8324 https://www.cve.org/CVERecord?id=CVE-2015-8324 Référence CVE CVE-2015-8543 https://www.cve.org/CVERecord?id=CVE-2015-8543 Référence CVE CVE-2015-8767 https://www.cve.org/CVERecord?id=CVE-2015-8767 Référence CVE CVE-2016-0701 https://www.cve.org/CVERecord?id=CVE-2016-0701 Référence CVE CVE-2016-0774 https://www.cve.org/CVERecord?id=CVE-2016-0774 Référence CVE CVE-2016-1583 https://www.cve.org/CVERecord?id=CVE-2016-1583 Référence CVE CVE-2016-2143 https://www.cve.org/CVERecord?id=CVE-2016-2143 Référence CVE CVE-2016-2550 https://www.cve.org/CVERecord?id=CVE-2016-2550 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2017-AVI-111Multiples vulnérabilités dans les produits Juniper

.cve.org/CVERecord?id=CVE-2015-1349 Référence CVE CVE-2015-2808 https://www.cve.org/CVERecord?id=CVE-2015-2808 Référence CVE CVE-2015-3209 https://www.cve.org/CVERecord?id=CVE-2015-3209 Référence CVE CVE-2015-3456 https://www.cve.org/CVERecord?id=CVE-2015-3456 Référence CVE CVE-2015-4620 https://www.cve.org/CVERecord?id=CVE-2015-4620 Référence CVE CVE-2015-5307 https://www.cve.org/CVERecord?id=CVE-2015-5307 Référence CVE CVE-2015-5477 https://www.cve.org/CVERecord?id=CVE-2015-5477 Référence CVE CVE-2015-7973 https://www.cve.org/CVERecord?id=CVE-2015-7973 Référence CVE CVE-2015-7979 https://www.cve.org/CVERecord?id=CVE-2015-7979 Référence CVE CVE-2015-8104 https://www.cve.org/CVERecord?id=CVE-2015-8104 Référence CVE CVE-2015-8138 https://www.cve.org/CVERecord?id=CVE-2015-8138 Référence CVE CVE-2015-8158 https://www.cve.org/CVERecord?id=CVE-2015-8158 Référence CVE CVE-2016-1014 https://www.cve.org/CVERecord?id=CVE-2016-1014 Référence CVE CVE-2016-1886 https://www.cve.org/CVERecord?id=CVE-2016-1886 Référence CVE CVE-2016-2776 https://www.cve.org/CVERecord?id=CVE-2016-2776 Référence CVE CVE-2016-7427 https://www.cve.org/CVERecord?id=CVE-2016-7427 Référence CVE CVE-2016-7429 https://www.cve.org/CVERecord?id=CVE-2016-7429 Référence CVE CVE-2016-7431 https://www.cve.org/CVERecord?id=CVE-2016-7431 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2017-AVI-012Multiples vulnérabilités dans les produits Juniper

nt&id=JSA10774&cat=SIRT_1&actp=LIST Référence CVE CVE-2015-5307 https://www.cve.org/CVERecord?id=CVE-2015-5307 Référence CVE CVE-2015-5352 https://www.cve.org/CVERecord?id=CVE-2015-5352 Référence CVE CVE-2015-5364 https://www.cve.org/CVERecord?id=CVE-2015-5364 Référence CVE CVE-2015-5366 https://www.cve.org/CVERecord?id=CVE-2015-5366 Référence CVE CVE-2015-5600 https://www.cve.org/CVERecord?id=CVE-2015-5600 Référence CVE CVE-2015-6563 https://www.cve.org/CVERecord?id=CVE-2015-6563 Référence CVE CVE-2015-6564 https://www.cve.org/CVERecord?id=CVE-2015-6564 Référence CVE CVE-2015-6565 https://www.cve.org/CVERecord?id=CVE-2015-6565 Référence CVE CVE-2015-8104 https://www.cve.org/CVERecord?id=CVE-2015-8104 Référence CVE CVE-2015-8325 https://www.cve.org/CVERecord?id=CVE-2015-8325 Référence CVE CVE-2016-0777 https://www.cve.org/CVERecord?id=CVE-2016-0777 Référence CVE CVE-2016-0778 https://www.cve.org/CVERecord?id=CVE-2016-0778 Référence CVE CVE-2016-1762 https://www.cve.org/CVERecord?id=CVE-2016-1762 Référence CVE CVE-2016-1833 https://www.cve.org/CVERecord?id=CVE-2016-1833 Référence CVE CVE-2016-1834 https://www.cve.org/CVERecord?id=CVE-2016-1834 Référence CVE CVE-2016-1835 https://www.cve.org/CVERecord?id=CVE-2016-1835 Référence CVE CVE-2016-1836 https://www.cve.org/CVERecord?id=CVE-2016-1836 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2016-AVI-244Multiples vulnérabilités dans Oracle Sun Systems Products Suite

.cve.org/CVERecord?id=CVE-2012-3410 Référence CVE CVE-2013-2566 https://www.cve.org/CVERecord?id=CVE-2013-2566 Référence CVE CVE-2014-3566 https://www.cve.org/CVERecord?id=CVE-2014-3566 Référence CVE CVE-2015-0235 https://www.cve.org/CVERecord?id=CVE-2015-0235 Référence CVE CVE-2015-1793 https://www.cve.org/CVERecord?id=CVE-2015-1793 Référence CVE CVE-2015-2808 https://www.cve.org/CVERecord?id=CVE-2015-2808 Référence CVE CVE-2015-3183 https://www.cve.org/CVERecord?id=CVE-2015-3183 Référence CVE CVE-2015-3197 https://www.cve.org/CVERecord?id=CVE-2015-3197 Référence CVE CVE-2015-5600 https://www.cve.org/CVERecord?id=CVE-2015-5600 Référence CVE CVE-2015-8104 https://www.cve.org/CVERecord?id=CVE-2015-8104 Référence CVE CVE-2016-0800 https://www.cve.org/CVERecord?id=CVE-2016-0800 Référence CVE CVE-2016-3451 https://www.cve.org/CVERecord?id=CVE-2016-3451 Référence CVE CVE-2016-3453 https://www.cve.org/CVERecord?id=CVE-2016-3453 Référence CVE CVE-2016-3480 https://www.cve.org/CVERecord?id=CVE-2016-3480 Référence CVE CVE-2016-3481 https://www.cve.org/CVERecord?id=CVE-2016-3481 Référence CVE CVE-2016-3497 https://www.cve.org/CVERecord?id=CVE-2016-3497 Référence CVE CVE-2016-3584 https://www.cve.org/CVERecord?id=CVE-2016-3584 Référence CVE CVE-2016-3585 https://www.cve.org/CVERecord?id=CVE-2016-3585 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2016-AVI-050Multiples vulnérabilités dans le noyau Linux de Suse

De multiples vulnérabilités ont été corrigées dans le noyau Linux de Suse . Elles permettent à un attaquant de provoquer un déni de service à distance et une élévation de privilèges.

Official advisory ↗
CERT-FR · French · CERTFR-2016-AVI-029Multiples vulnérabilités dans Oracle Linux and Virtualization

De multiples vulnérabilités ont été corrigées dans Oracle Linux and Virtualization . Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service et une atteinte à l'intégrité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-563Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été corrigées dans le noyau Linux de SUSE . Elles permettent à un attaquant de provoquer un déni de service à distance et une élévation de privilèges.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-556Multiples vulnérabilités dans Citrix XenServer

De multiples vulnérabilités ont été corrigées dans Citrix XenServer . Elles permettent à un attaquant de provoquer un déni de service à distance et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-554Multiples vulnérabilités dans le noyau Linux de Debian

De multiples vulnérabilités ont été corrigées dans le noyau Linux de Debian . Elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une élévation de privilèges.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-549Multiples vulnérabilités dans le noyau Linux d'Ubuntu

De multiples vulnérabilités ont été corrigées dans le noyau Linux d' Ubuntu . Elles permettent à un attaquant de provoquer un déni de service et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-508Multiples vulnérabilités dans le noyau Linux de Suse

De multiples vulnérabilités ont été corrigées dans le noyau Linux de Suse . Elles permettent à un attaquant de provoquer un déni de service à distance et une élévation de privilèges.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-466Multiples vulnérabilités dans Citrix XenServer

De multiples vulnérabilités ont été corrigées dans Citrix XenServer . Elles permettent à un attaquant de provoquer un déni de service.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2015-005936Linux Kernel の KVM サブシステムおよび Xen におけるサービス運用妨害 (DoS) の脆弱性

Linux Kernel の KVM サブシステム、および Xen には、svm.c に関する処理に不備があるため、サービス運用妨害 (ホスト OS のパニックまたはハング) 状態にされる脆弱性が存在します。

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
n/a: n/a
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
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 16 Nov 2015 · Last source change 23 Apr 2025, 15:40 UTC · CWE-399

CVE recordCVE.org · 5.1
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2015-7996
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
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 ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to authoritative remediation link · patch, vendor advisory.
    Before
    vendor advisory
    After
    authoritative remediation link · patch, vendor advisory
    af854a3a-2127-422b-91ae-364da2661108 ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    af854a3a-2127-422b-91ae-364da2661108 ↗
  4. ENISA EUVD mappingEUVD-2015-7996 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2015-7996"}
    ENISA EUVD ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
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-2015-7996↗Vendor advisory↗Patch or update reference↗Patch or update reference↗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-2015-8104 · cve.blacktree.nl