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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00163.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 affected < f7d92313002b2d543500cc417d8079aaed1fb0a8
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 affected < 4e82f92c349ea603736ade1e814861c0182a55ad
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 affected < db8657fdd53c5e3069149d7f957cb60e63027bb2
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 affected < 421cd1544480f2458042fe7f4913a2069c4d7251
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 affected < b4bda59b47879cce38a6ec5a01cd3cac702b5331
Linux Linux affected
Version Status Constraints
5.14 affected —
0 unaffected < 5.14
5.15.121 unaffected ≤ 5.15.*
6.1.39 unaffected ≤ 6.1.*
6.3.13 unaffected ≤ 6.3.*
6.4.4 unaffected ≤ 6.4.*
6.5 unaffected ≤ *

No data.

No data.

No data.

Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/421cd1544480f2458042fe7f4913a2069c4d7251 cve-icon cve-icon
https://git.kernel.org/stable/c/4e82f92c349ea603736ade1e814861c0182a55ad cve-icon cve-icon
https://git.kernel.org/stable/c/b4bda59b47879cce38a6ec5a01cd3cac702b5331 cve-icon cve-icon
https://git.kernel.org/stable/c/db8657fdd53c5e3069149d7f957cb60e63027bb2 cve-icon cve-icon
https://git.kernel.org/stable/c/f7d92313002b2d543500cc417d8079aaed1fb0a8 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122440-CVE-2023-54042-2617@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54042 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54042 cve-icon
History

Tue, 04 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Fri, 26 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 24 Dec 2025 11:15:00 +0000

Type Values Removed Values Added
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.
Title powerpc/64s: Fix VAS mm use after free
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-04T09:17:16.602Z

Reserved: 2025-12-24T10:53:46.181Z

Link: CVE-2023-54042

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2025-12-24T11:15:57.187

Modified: 2026-06-17T06:46:41.967

Link: CVE-2023-54042

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2023-54042 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.