powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address() (CVE-2026-68473) | HOL Guard CVE

High · CVSS 7.8CVE-2026-68473

powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address()

Answer in brief

CVE-2026-68473 records a High severity (CVSS 7.8) vulnerability in powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Aug 17, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=861574d51bbd7a06dbf07f658a9a8def012c2f74 <d5c234774a82f27b594f70c15fc45ce3648e4295 \|\| >=861574d51bbd7a06dbf07f658a9a8def012c2f74 <d610d3ab18197d87618da11ec5fe8b3cebf32208	d5c234774a82f27b594f70c15fc45ce3648e4295, d610d3ab18197d87618da11ec5fe8b3cebf32208
Linux/Linuxgeneric	7.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to d5c234774a82f27b594f70c15fc45ce3648e4295 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address() mask_user_address() incorrectly checks for CONFIG_E500 instead of CONFIG_PPC_E500, causing mask_user_address_isel() to not be used on E500 hardware. Fix the check to use the correct name.

Quoted source text, attributed separately from HOL analysis.