{"id":"CVE-2023-53019","title":"net: mdio: validate parameter addr in mdiobus_get_phy()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mdio: validate parameter addr in mdiobus_get_phy()\n\nThe caller may pass any value as addr, what may result in an out-of-bounds\naccess to array mdio_map. One existi…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 1d80c259dfbadefa61b7ea334dfce5cb57f8c72f","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < c431a3d642593bbdb99e8a9e3eed608b730db6f8","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 8a7b9560a3a8eb8724888c426e05926752f73aa0","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < ad67de330d83e8078372b52af18ffe8d39e26c85","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 7879626296e6ffd838ae0f2af1ab49ee46354973","Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 867dbe784c5010a466f00a7d1467c1c5ea569c75","Linux 4.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:14:40.020005Z"},"published":"2025-03-27","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:20:54.506Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53019","references":[{"url":"https://git.kernel.org/stable/c/1d80c259dfbadefa61b7ea334dfce5cb57f8c72f"},{"url":"https://git.kernel.org/stable/c/c431a3d642593bbdb99e8a9e3eed608b730db6f8"},{"url":"https://git.kernel.org/stable/c/8a7b9560a3a8eb8724888c426e05926752f73aa0"},{"url":"https://git.kernel.org/stable/c/4bc5f1f6bc94e695dfd912122af96e7115a0ddb8"},{"url":"https://git.kernel.org/stable/c/ad67de330d83e8078372b52af18ffe8d39e26c85"},{"url":"https://git.kernel.org/stable/c/7879626296e6ffd838ae0f2af1ab49ee46354973"},{"url":"https://git.kernel.org/stable/c/867dbe784c5010a466f00a7d1467c1c5ea569c75"}],"tags":["cve.org"],"epss":0.00201,"epssPercentile":0.10104,"ingestedAt":"2026-11-05T22:38:31.760Z","slug":"CVE-2023-53019","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: mdio: validate parameter addr in mdiobus_get_phy()\n\nThe caller may pass any value as addr, what may result in an out-of-bounds\naccess to array mdio_map. One existing case is stmmac_init_phy() that\nmay pass -1 as addr. Therefore validate addr before using it.\n\n## Affected\n\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 1d80c259dfbadefa61b7ea334dfce5cb57f8c72f`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < c431a3d642593bbdb99e8a9e3eed608b730db6f8`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 8a7b9560a3a8eb8724888c426e05926752f73aa0`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 4bc5f1f6bc94e695dfd912122af96e7115a0ddb8`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < ad67de330d83e8078372b52af18ffe8d39e26c85`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 7879626296e6ffd838ae0f2af1ab49ee46354973`\n- `Linux >= 7f854420fbfe9d49afe2ffb1df052cfe8e215541 < 867dbe784c5010a466f00a7d1467c1c5ea569c75`\n- `Linux 4.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}