BlackTreeCVE Intelligence
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Full vulnerability report · 2018
CVE-2018-7740High confidence

n/a: Improper Restriction of Operations within the Bounds of a Memory Buffer

n/a · n/a

5.5MediumCVSS 3.0
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Distribution package intelligence

Ubuntu vendor package status

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

5 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
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-2018-19455

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 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

What

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

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

What

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through local access may attempt exploitation with low 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
local access → Improper Restriction of Operations within the Bounds of a Memory Buffer → disrupt the affected service
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: a standard category for the underlying weakness.
CWE-119

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.0: 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.
Denial of serviceCWE-119Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-2022-0532Linux Kernel: Mehrere Schwachstellen

Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, einen Denial of Service Angriff durchzuführen, Sicherheitsmechanismen zu umgehen, vertrauliche Daten einzusehen oder seine Privilegien zu erweitern.

Official advisory ↗
CERT-FR · French · CERTFR-2019-AVI-299Multiples vulnérabilités dans IBM QRadar

ERecord?id=CVE-2018-10881 Référence CVE CVE-2018-10883 https://www.cve.org/CVERecord?id=CVE-2018-10883 Référence CVE CVE-2018-1092 https://www.cve.org/CVERecord?id=CVE-2018-1092 Référence CVE CVE-2018-1094 https://www.cve.org/CVERecord?id=CVE-2018-1094 Référence CVE CVE-2018-13405 https://www.cve.org/CVERecord?id=CVE-2018-13405 Référence CVE CVE-2018-14634 https://www.cve.org/CVERecord?id=CVE-2018-14634 Référence CVE CVE-2018-14646 https://www.cve.org/CVERecord?id=CVE-2018-14646 Référence CVE CVE-2018-17972 https://www.cve.org/CVERecord?id=CVE-2018-17972 Référence CVE CVE-2018-5344 https://www.cve.org/CVERecord?id=CVE-2018-5344 Référence CVE CVE-2018-7740 https://www.cve.org/CVERecord?id=CVE-2018-7740 Référence CVE CVE-2018-9568 https://www.cve.org/CVERecord?id=CVE-2018-9568 Référence CVE CVE-2019-3855 https://www.cve.org/CVERecord?id=CVE-2019-3855 Référence CVE CVE-2019-3856 https://www.cve.org/CVERecord?id=CVE-2019-3856 Référence CVE CVE-2019-3857 https://www.cve.org/CVERecord?id=CVE-2019-3857 Référence CVE CVE-2019-3863 https://www.cve.org/CVERecord?id=CVE-2019-3863 Référence CVE CVE-2019-5953 https://www.cve.org/CVERecord?id=CVE-2019-5953 Référence CVE CVE-2019-6974 https://www.cve.org/CVERecord?id=CVE-2019-6974 Référence CVE CVE-2019-7221 https://www.cve.org/CVERecord?id=CVE-2019-7221 Ge

Official advisory ↗
CERT-FR · French · CERTFR-2019-AVI-115Multiples vulnérabilités dans le noyau Linux d'Ubuntu

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer un déni de service et une élévation de privilèges.

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-505Multiples vulnérabilités dans le noyau Linux de SUSE

.cve.org/CVERecord?id=CVE-2018-3639 Référence CVE CVE-2018-3646 https://www.cve.org/CVERecord?id=CVE-2018-3646 Référence CVE CVE-2018-3665 https://www.cve.org/CVERecord?id=CVE-2018-3665 Référence CVE CVE-2018-5390 https://www.cve.org/CVERecord?id=CVE-2018-5390 Référence CVE CVE-2018-5391 https://www.cve.org/CVERecord?id=CVE-2018-5391 Référence CVE CVE-2018-5803 https://www.cve.org/CVERecord?id=CVE-2018-5803 Référence CVE CVE-2018-5814 https://www.cve.org/CVERecord?id=CVE-2018-5814 Référence CVE CVE-2018-5848 https://www.cve.org/CVERecord?id=CVE-2018-5848 Référence CVE CVE-2018-7492 https://www.cve.org/CVERecord?id=CVE-2018-7492 Référence CVE CVE-2018-7740 https://www.cve.org/CVERecord?id=CVE-2018-7740 Référence CVE CVE-2018-8043 https://www.cve.org/CVERecord?id=CVE-2018-8043 Référence CVE CVE-2018-8781 https://www.cve.org/CVERecord?id=CVE-2018-8781 Référence CVE CVE-2018-8822 https://www.cve.org/CVERecord?id=CVE-2018-8822 Référence CVE CVE-2018-8897 https://www.cve.org/CVERecord?id=CVE-2018-8897 Référence CVE CVE-2018-9385 https://www.cve.org/CVERecord?id=CVE-2018-9385 Gestion détaillée du document le 19 octobre 2018 Version initiale le 19 octobre 2018 Ajout du bulletin de sécurité SUSE suse-su-20183238-1 du 18 octobre 2018 Alertes Avis Bulletins d’actualités Mentions légales Conditions génér

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-232Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE . Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-224Multiples vulnérabilités dans le noyau Linux de SUSE

ERecord?id=CVE-2017-16914 Référence CVE CVE-2017-18203 https://www.cve.org/CVERecord?id=CVE-2017-18203 Référence CVE CVE-2017-18208 https://www.cve.org/CVERecord?id=CVE-2017-18208 Référence CVE CVE-2017-18257 https://www.cve.org/CVERecord?id=CVE-2017-18257 Référence CVE CVE-2018-10087 https://www.cve.org/CVERecord?id=CVE-2018-10087 Référence CVE CVE-2018-10124 https://www.cve.org/CVERecord?id=CVE-2018-10124 Référence CVE CVE-2018-1087 https://www.cve.org/CVERecord?id=CVE-2018-1087 Référence CVE CVE-2018-6927 https://www.cve.org/CVERecord?id=CVE-2018-6927 Référence CVE CVE-2018-7566 https://www.cve.org/CVERecord?id=CVE-2018-7566 Référence CVE CVE-2018-7740 https://www.cve.org/CVERecord?id=CVE-2018-7740 Référence CVE CVE-2018-7757 https://www.cve.org/CVERecord?id=CVE-2018-7757 Référence CVE CVE-2018-8043 https://www.cve.org/CVERecord?id=CVE-2018-8043 Référence CVE CVE-2018-8781 https://www.cve.org/CVERecord?id=CVE-2018-8781 Référence CVE CVE-2018-8822 https://www.cve.org/CVERecord?id=CVE-2018-8822 Référence CVE CVE-2018-8897 https://www.cve.org/CVERecord?id=CVE-2018-8897 Gestion détaillée du document le 09 mai 2018 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-199Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Elles permettent à un attaquant de provoquer une exécution de code arbitraire et un déni de service.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2018-002659Linux Kernel におけるバッファエラーの脆弱性

Linux Kernel には、バッファエラーの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.
Fix not verified
Affected
n/a: n/a
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 7 Mar 2018 · Last source change 5 Aug 2024, 06:37 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2018-19455
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 no authoritative guidance recorded.
    Before
    vendor advisory
    After
    no authoritative guidance recorded
    CNA
  2. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    af854a3a-2127-422b-91ae-364da2661108
  3. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    NIST NVD
  4. CVSS scoreCVSS score changed from not recorded to 5.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
    Before
    not recorded
    After
    5.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
    NIST NVD
  5. ENISA EUVD mappingEUVD-2018-19455 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2018-19455"}
    ENISA EUVD
  6. Catalogue recordCVE added to the BlackTree catalogue.
    CNA
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-2018-7740 · cve.blacktree.nl