CVE-2023-38427

criticalpriority · track · 39EPSS 0.012 · 69 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.24% (69th) EPSS

CVSS 9.8 · critical

Is it mine?

17 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-191USprimaryCWE-125USCWE-191US

affected products (17)

Products and version ranges known to be affected.

Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
АО «ИВК» АЛЬТ СП 10all versionsfstec_bduRU
АО «НТЦ ИТ РОСА» РОСА ХРОМ≤ 12.4fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 4.7fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.6 «Смоленск»fstec_bduRU
Сообщество свободного программного обеспечения Linux5.15 → 5.15.144fstec_bduRU
Сообщество свободного программного обеспечения Linux5.16 → 6.1.33fstec_bduRU
Сообщество свободного программного обеспечения Linux6.2 → 6.3.7fstec_bduRU
linux linux kernel5.15 → 5.15.145nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux kernel5.16 → 6.1.34nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux kernel6.2 → 6.3.8nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
netapp h300sall versionsnvdUScpe:2.3:h:netapp:h300s:*:*:*:*:*:*:*:*
netapp h410sall versionsnvdUScpe:2.3:h:netapp:h410s:*:*:*:*:*:*:*:*
netapp h500sall versionsnvdUScpe:2.3:h:netapp:h500s:*:*:*:*:*:*:*:*
netapp h700sall versionsnvdUScpe:2.3:h:netapp:h700s:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1770Linux Kernel: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen oder Umgehung von SicherheitsvorkehrungenDeutsch2023-07-17csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Informationen offenzulegen oder Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2023-07-18modified 2026-06-17

related (12,515)

Related entries.

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+12510 more

references (12)

External citations — patches, advisories, analysis.

scry

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