CVE-2023-40791

mediumpriority · track · 25EPSS 0.005 · 41 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.48% (41st) EPSS
CVSS 6.3 · medium
Is it mine?
7 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

01

cvss

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

6.3
010

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

v3.16.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USexploitability 1 · impact 5.2
v3.16.3mediumAV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.15.8mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-762US
03

affected products (7)

Products and version ranges known to be affected.

04

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2023-2659Linux Kernel: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-10-16csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

05

also known as (4)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bdunvdcert_bundNVDCVE.orgMITRE
published 2023-10-16modified 2026-06-17
07

references (15)

External citations — patches, advisories, analysis.

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