powerpc/64s: Fix VAS mm use after free (CVE-2023-54042) | HOL Guard CVE

High · CVSS 7.8CVE-2023-54042

powerpc/64s: Fix VAS mm use after free

Answer in brief

CVE-2023-54042 records a High severity (CVSS 7.8) vulnerability in powerpc/64s: Fix VAS mm use after free. 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 Dec 24, 2025Updated Aug 4, 2026Source checked Aug 5, 2026First seen by HOL Aug 4, 2026Material review Aug 4, 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	>=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <f7d92313002b2d543500cc417d8079aaed1fb0a8 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <4e82f92c349ea603736ade1e814861c0182a55ad \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <db8657fdd53c5e3069149d7f957cb60e63027bb2 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <421cd1544480f2458042fe7f4913a2069c4d7251 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <b4bda59b47879cce38a6ec5a01cd3cac702b5331	f7d92313002b2d543500cc417d8079aaed1fb0a8, 4e82f92c349ea603736ade1e814861c0182a55ad, db8657fdd53c5e3069149d7f957cb60e63027bb2, 421cd1544480f2458042fe7f4913a2069c4d7251, b4bda59b47879cce38a6ec5a01cd3cac702b5331
Linux/Linuxgeneric	5.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f7d92313002b2d543500cc417d8079aaed1fb0a8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix VAS mm use after free The refcount on mm is dropped before the coprocessor is detached.

Quoted source text, attributed separately from HOL analysis.

Back to active CVEs

High · CVSS 7.8CVE-2023-54042

powerpc/64s: Fix VAS mm use after free

Answer in brief

Analysis pending evidence review

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

Published Dec 24, 2025Updated Aug 4, 2026Source checked Aug 5, 2026First seen by HOL Aug 4, 2026Material review Aug 4, 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	>=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <f7d92313002b2d543500cc417d8079aaed1fb0a8 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <4e82f92c349ea603736ade1e814861c0182a55ad \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <db8657fdd53c5e3069149d7f957cb60e63027bb2 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <421cd1544480f2458042fe7f4913a2069c4d7251 \|\| >=7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 <b4bda59b47879cce38a6ec5a01cd3cac702b5331	f7d92313002b2d543500cc417d8079aaed1fb0a8, 4e82f92c349ea603736ade1e814861c0182a55ad, db8657fdd53c5e3069149d7f957cb60e63027bb2, 421cd1544480f2458042fe7f4913a2069c4d7251, b4bda59b47879cce38a6ec5a01cd3cac702b5331
Linux/Linuxgeneric	5.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f7d92313002b2d543500cc417d8079aaed1fb0a8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix VAS mm use after free The refcount on mm is dropped before the coprocessor is detached.

Quoted source text, attributed separately from HOL analysis.

powerpc/64s: Fix VAS mm use after free

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs

powerpc/64s: Fix VAS mm use after free

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs