CVE-2022-39842

mediumpriority · track · 24EPSS 0.006 · 48 %ileDEEUNLRUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.59% (48th) EPSS
CVSS 6.1 · medium
Is it mine?
95 products
Check your exposure
Who says so?
8 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

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⚠ sources disagree · medium–critical · 5.6–9.8

v3.16.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 4.2
v3.16.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Hsecondary · CISA US
v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.16.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Hsecondary · Siemens ProductCERT DE
v3.15.6mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.16.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Hsecondary · NCSC-NL NL
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USprimaryCWE-122USCWE-190USCWE-190USCWE-190US
04

affected products (95)

Products and version ranges known to be affected.

showing 20 of 95
05

advisories (6)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0061Kwetsbaarheden verholpen in Siemens productenNL2025-02-14csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als APOGEE, Opcenter, RUGGEDCOM, SCALANCE, SIMATIC, SIPROTEC en Teamcenter.

  • SSA-769027SSA-769027: Multiple Vulnerabilities fixed in SCALANCE W700 IEEE 802.11ax devices before V3.0.02025-02-11csaf · siemens_psirtDE

    SCALANCE W-700 IEEE 802.11ax family devices are affected by multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.

  • WID-SEC-W-2022-1287Linux Kernel: Schwachstelle ermöglicht nicht spezifizierten AngriffDeutsch2022-09-04csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

  • WID-SEC-W-2023-0292Android Patchday Februar 2023Deutsch2023-02-06csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Google Android ausnutzen, um seine Privilegien zu erhöhen, vertrauliche Informationen offenzulegen und einen Denial-of-Service-Zustand zu verursachen.

  • ICSA-25-044-09Siemens SCALANCE W700 IEEE 802.11ax2025-02-11icsa · cisa_csaf_otUS

    SCALANCE W-700 IEEE 802.11ax family devices are affected by multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.

  • ASB-A-2459288382023-02-01vendor · osvUS

    In pxa3xx_gcu_write of pxa3xx-gcu.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundcisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
published 2022-09-05modified 2026-06-17
09

references (34)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan