CVE-2023-32256

highpriority · track · 0EPSS 0.006 · 47 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (47th) EPSS

CVSS 7.5 · high

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highAV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:Hsecondary · secalert@redhat.com USexploitability 2.2 · impact 4.7

v3.16.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-421US

affected products (5)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
Сообщество свободного программного обеспечения Linux≤ 6.4 rc1fstec_bduRU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1255Linux Kernel (ksmbd): Mehrere SchwachstellenDeutsch2023-05-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service-Zustand herbeizuführen, Informationen offenzulegen, Sicherheitsvorkehrungen zu umgehen, Privilegien zu erweitern und beliebigen Code auszuführen.

also known as (6)

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 2025-08-01modified 2026-06-29

references (13)

External citations — patches, advisories, analysis.

scry

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