CVE-2022-39842

MEDIUMNVD 6.17.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-09-06. NVD baseline CVSS 6.1; sources differ by 1.7.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.1Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
6.1
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
43.5%
KEV
Not listed

Published

September 5, 2022

Last Modified

November 21, 2024

References (12)

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-headers-5.4.0-136-generic (5.4.0-136.153) @ focal2026-05-25ubuntu
ubuntulinux-headers-virtual-hwe-20.04 (5.15.0.57.63~20.04.23) @ focal2026-05-25ubuntu
ubuntulinux-image-5.4.0-1100-azure (5.4.0-1100.106) @ focal2026-05-25ubuntu
ubuntulinux-headers-azure-fde (5.15.0.1030.37.7) @ jammy2026-05-25ubuntu
ubuntulinux-modules-extra-4.15.0-1114-oracle (4.15.0-1114.125) @ bionic2026-05-25ubuntu
ubuntulinux-dell300x-headers-4.15.0-1060 (4.15.0-1060.65) @ bionic2026-05-25ubuntu
ubuntulinux-tools-snapdragon (4.15.0.1145.144) @ bionic2026-05-25ubuntu
ubuntulinux-headers-bluefield (5.4.0.1054.50) @ focal2026-05-25ubuntu
ubuntulinux-headers-gcp (4.15.0.1146.136) @ xenial2026-05-25ubuntu
ubuntulinux-image-azure-lts-18.04 (4.15.0.1161.129) @ bionic2026-05-25ubuntu
ubuntulinux-modules-extra-5.15.0-1027-gke (5.15.0-1027.32~20.04.1) @ focal2026-05-25ubuntu
ubuntulinux-tools-virtual-hwe-16.04 (4.15.0.206.191) @ xenial2026-05-25ubuntu
ubuntulinux-image-azure (4.15.0.1162.128) @ trusty2026-05-25ubuntu
ubuntulinux-headers-azure-fde (5.4.0.1100.106+cvm1.35) @ focal2026-05-25ubuntu
ubuntulinux-headers-azure-edge (4.15.0.1162.146) @ xenial2026-05-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(16)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 15× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 114 total refreshes for this CVE.

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Frequently asked(5)

What is CVE-2022-39842?
CVE-2022-39842 is a medium vulnerability published on September 5, 2022. An issue was discovered in the Linux kernel before 5.19. In pxa3xxgcuwrite in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of sizet versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to…
When was CVE-2022-39842 disclosed?
CVE-2022-39842 was first published in the National Vulnerability Database on September 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-39842 actively exploited?
CVE-2022-39842 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-39842?
CVE-2022-39842 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.
How do I remediate CVE-2022-39842?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-39842, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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