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 release
Source package
Vendor state
Fixed version
Evidence
Ubuntu 24.04 LTSnoble · standard archive
linux-azure-6.11
Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.
Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.
Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.
Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.
Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.
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: 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.
ENISA EUVD · EUVD-2018-19455Official EUVD mapping
0 linked advisory records.
Official EUVD record ↗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
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
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
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.
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.
CVE-2018-7740: n/a: Improper Restriction of Operations within the Bounds of a Memory Buffer | BlackTree