CVE-2018-1093

highpriority · track · 23EPSS 0.019 · 80 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.92% (80th) EPSS

CVSS 7.1 · high

Is it mine?

23 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–7.1

v2.07.1highAV:N/AC:M/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 6.9

v3.05.5mediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.5mediumAV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125US

affected products (23)

Products and version ranges known to be affected.

Avaya Aura Application Enablement Servicesall versionscert_bundDEcpe:/a:avaya:aura_application_enablement_services:-
Avaya Aura Communication Managerall versionscert_bundDEcpe:/a:avaya:communication_manager:-
Avaya Aura Experience Portalall versionscert_bundDEcpe:/a:avaya:aura_experience_portal:-
Avaya Aura Session Managerall versionscert_bundDEcpe:/a:avaya:session_manager:-
Avaya Aura System Managerall versionscert_bundDEcpe:/a:avaya:aura_system_manager:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
NetApp AFFall versionscert_bundDEcpe:/h:netapp:aff:-
NetApp FASall versionscert_bundDEcpe:/h:netapp:fas:-
Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Oracle Linux 5all versionscert_bundDEcpe:/o:oracle:linux:5
Oracle Linux 6all versionscert_bundDEcpe:/o:oracle:linux:6
Oracle Linux 7all versionscert_bundDEcpe:/o:oracle:linux:7
Oracle VMall versionscert_bundDEcpe:/a:oracle:vm:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a Linux kernel through version 4.15≤ Linux kernel through version 4.15enisa_euvdEU
Сообщество свободного программного обеспечения Linux4.0 → 4.4.130fstec_bduRU
Сообщество свободного программного обеспечения Linux4.10 → 4.14.38fstec_bduRU

showing 20 of 23

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0532Linux Kernel: Mehrere SchwachstellenDeutsch2018-05-01csaf · cert_bundDE
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.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2018-04-02modified 2026-06-17

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+11867 more

references (30)

External citations — patches, advisories, analysis.

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