{"id":"CVE-2023-54042","title":"powerpc/64s: Fix VAS mm use after free","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/64s: Fix VAS mm use after free\n\nThe refcount on mm is dropped before the coprocessor is detached.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < f7d92313002b2d543500cc417d8079aaed1fb0a8","Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < 4e82f92c349ea603736ade1e814861c0182a55ad","Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < db8657fdd53c5e3069149d7f957cb60e63027bb2","Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < 421cd1544480f2458042fe7f4913a2069c4d7251","Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < b4bda59b47879cce38a6ec5a01cd3cac702b5331","Linux 5.14"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:37:58.217277Z"},"published":"2025-12-24","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:38.268Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54042","references":[{"url":"https://git.kernel.org/stable/c/f7d92313002b2d543500cc417d8079aaed1fb0a8"},{"url":"https://git.kernel.org/stable/c/4e82f92c349ea603736ade1e814861c0182a55ad"},{"url":"https://git.kernel.org/stable/c/db8657fdd53c5e3069149d7f957cb60e63027bb2"},{"url":"https://git.kernel.org/stable/c/421cd1544480f2458042fe7f4913a2069c4d7251"},{"url":"https://git.kernel.org/stable/c/b4bda59b47879cce38a6ec5a01cd3cac702b5331"}],"tags":["cve.org"],"epss":0.0014,"epssPercentile":0.02973,"ingestedAt":"2026-10-15T22:48:25.425Z","slug":"CVE-2023-54042","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/64s: Fix VAS mm use after free\n\nThe refcount on mm is dropped before the coprocessor is detached.\n\n## Affected\n\n- `Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < f7d92313002b2d543500cc417d8079aaed1fb0a8`\n- `Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < 4e82f92c349ea603736ade1e814861c0182a55ad`\n- `Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < db8657fdd53c5e3069149d7f957cb60e63027bb2`\n- `Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < 421cd1544480f2458042fe7f4913a2069c4d7251`\n- `Linux >= 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 < b4bda59b47879cce38a6ec5a01cd3cac702b5331`\n- `Linux 5.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}